Scoping Review of Employer-Led Research Using Employee Health Claims Data

1 EpidStrategies, A Division of ToxStrategies, Rockville, Maryland, USA.

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Susan T. Pastula

1 EpidStrategies, A Division of ToxStrategies, Rockville, Maryland, USA.

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Saumitra V. Rege

2 ExxonMobil Biomedical Sciences, Inc. (EMBSI), Annandale, New Jersey, USA.

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R. Jeffrey Lewis

3 Epidemiology Contractor (Retired EMBSI), Lavallette, New Jersey, USA.

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Lauren C. Bylsma

1 EpidStrategies, A Division of ToxStrategies, Rockville, Maryland, USA.

Find articles by Lauren C. Bylsma 1 EpidStrategies, A Division of ToxStrategies, Rockville, Maryland, USA. 2 ExxonMobil Biomedical Sciences, Inc. (EMBSI), Annandale, New Jersey, USA. 3 Epidemiology Contractor (Retired EMBSI), Lavallette, New Jersey, USA. Corresponding author.

This article has been updated on September 13, 2023 after first online publication of September 8, 2023 to reflect Open Access, with copyright transferring to the author(s), and a Creative Commons License (CCY-BY) added (http://creativecommons.org/licenses/by/4.0/).

Address correspondence to: Naimisha Movva, MPH, EpidStrategies, A Division of ToxStrategies, Rockville, MD 20852, USA moc.seigetartsdipe@avvomn

i ORCID ID (https://orcid.org/0000-0001-9300-5473). Copyright © Naimisha Movva et al., 2023; Published by Mary Ann Liebert, Inc.

This Open Access article is distributed under the terms of the Creative Commons License [CC-BY] (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Employers may evaluate employee claims data for various reasons, including assessment of medical insurance and wellness plan efficacy, monitoring employee health trends, and identifying focus areas for wellness measures. The objective of this scoping review (ScR) is to describe the available literature reporting the use, applications, and outcomes of employee health claims data by self-insured employers. The ScR was conducted in a stepwise manner using an established framework: identifying the research question, identifying and selecting relevant studies, charting the data, and collating and reporting results. Literature searches were conducted in PubMed and Embase. Studies of self-insured employee populations that were conducted by the employer/s through May 2022 were identified using predefined criteria. Forty-one studies were included. The majority (90%) were cohort study designs; most employers (51%) were in industries such as aluminum production and health insurance providers. Twenty-four (59%) studies supplemented claims data with other sources such as human resource data to evaluate programs and/or health outcomes. A range of exposures (eg, chronic conditions, wellness program participation) and outcomes (eg, rates or costs of conditions, program effectiveness) were considered. Among the 25 studies that reported on patient confidentiality and privacy, 68% indicated institutional review board approval and 48% reported use of deidentified data. Many self-insured employers have used employee health claims data to gain insights into their employees' needs and health care utilization. These data can be used to identify potential improvements for wellness and other targeted programs to improve employee health and decrease absenteeism.

Keywords: claims data, employee health plan, employer, scoping review, self-insured, workforce health

Introduction

In 2020, 54.4 % of the US population (over 177 million persons) had employer-based health insurance. 1 Most large employers across industry sectors are self-insured and assume the financial risk of the employee health plans. 2,3 For example, the 2020 Kaiser Family Foundation Survey of Employer Health Benefits reported that 67% of employed workers had health insurance coverage under self-insured arrangements. 4

The relatively wide degree of health insurance coverage among the US workforce represents a potential data source to promote the health, well-being, and performance of employees. Improved employee health and well-being may not only benefit employees, but may also deliver a competitive business advantage for employers. 2,5 Implementation of evidence-based approaches using employee medical claims data can potentially lead to improved health and productivity among the workforce while also reducing health care costs and absenteeism. As a result, there are numerous potential applications of employee health claims data to self-insured employers. These include employee health and wellness monitoring, determining potential health impacts of new technologies or safety measures, optimizing health plan efficacy, identifying health disparities, improving quality of care, and tailoring prevention/management programs to meet employee health needs. Claims data may also inform employers in identifying drivers of health care utilization over time and prioritizing specific areas to reduce costs; for example, increased claims for tobacco-related diseases may prompt employers to incentivize employees for taking measures toward smoking cessation. In light of the aforementioned applications, health claims data may prove an important tool for self-insured employers to develop and sustain an effective workforce.

Although a number of studies have been published recently that provide examples of employers evaluating their workforce health claims data, 2,5,6 no scoping review (ScR) or systematic literature review has been conducted that has fully gauged the extent of the literature surrounding employer-led research of claims data. The objective of this ScR is to understand the ways in which self-insured employers have utilized or evaluated their employees' health claims data as well as the insights and benefits gained, and lessons learned from these analyses.

Methods

A study protocol was developed and registered on Open Science Framework (https://osf.io/qup2g) on August 17, 2022, before initiating the ScR. The ScR was conducted in accordance with the framework proposed by Arksey and O'Malley and further refined by the Joanna Briggs Institute. 7,8 The Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines—extension for scoping reviews (PRISMA-ScR) 9 were followed in all aspects of the preparation, conduct, and reporting of this review.

Eligibility criteria

As recommended by the Joanna Briggs Institute, 8 the eligibility criteria used to determine relevant studies were organized by population, concept, and context. Studies of employee populations from self-insured employers were included. Relevant studies were required to describe how and why employee health care claims data were used to be included. Those utilizing only primary data collection methods, such as employee interviews or questionnaires, were not included.

Studies must have been initiated by the self-insured employers; studies analyzing employee populations sponsored by third parties were excluded. Interventional studies, clinical trials, and conference abstracts were not included. Studies published in languages other than English, conducted outside of the United States, or not meeting the population, concept, and context criteria were excluded from the ScR.

Study identification, screening, and abstraction

An initial search of PubMed was conducted on July 18, 2022, to refine the final search string. Text words used in the title and abstract of the resulting articles were analyzed and relevant terms were used to build a comprehensive search that was run in PubMed and Embase on August 17, 2022. The final search strategy is provided in Table 1 , with no date restrictions. DistillerSR software 10 was utilized for study selection including deduplication, article screening, and abstraction, which resulted in a fully transparent and auditable process. Using the population, concept, and context criteria, 1 reviewer screened the titles and abstracts of the search hits.

Table 1.

Literature Search Strategy

DatabasePubMedEMBASE
Terms for employer (#1)“Employee”[TiAb] OR “employer”[TiAb] OR “company”[TiAb]“employee”:ab OR “employee”:ti OR “employer”:ab OR “employer”:ti OR “company”:ab OR “company”:ti
Terms for self-insured (#2)self-insured OR fully-insured OR “health plan” OR “claims data” OR “health claims” OR “medical claims” OR “employee health care” OR “employer burden” OR “workplace health” OR “workforce health”“self insured” OR “fully insured” OR “health plan” OR “claims data” OR “health claims” OR “medical claims” OR “employee health care” OR “employer burden” OR “workplace health” OR “workforce health”
FiltersEnglishEnglish; excluding “Conference Abstract,” “Conference Paper,” and “Conference Review”

The full text of the articles deemed relevant were examined independently by 2 reviewers. Studies included at the full text review stage were extracted in DistillerSR. Extracted data elements included general study information such as title and publication year, study characteristics including study design, location, and employer type, research objectives, study methodology, reported “exposures” (condition for entry into the study, eg, employment within a company, presence of a disease, or a workplace intervention) and “outcomes” (evaluated endpoints, eg, health care costs, prevalence of a condition, rate of workplace injury), measures to maintain confidentiality and patient privacy, strengths and limitations, and lessons learned.

Data extraction was completed by 1 reviewer and another reviewer performed an independent check of the data elements for accuracy. Disputes were resolved by a senior reviewer. Basic descriptive analyses (frequencies and percentages) were conducted on extracted study elements.

Results

Article identification

Figure 1 shows the PRISMA flow diagram, which details the study inclusion at each stage. Searches yielded 4287 hits; 2444 hits were screened after deduplication at the title and abstract level. Screening of the abstracts against the study eligibility criteria resulted in 263 studies that were reviewed at the full-text stage. Among these, 222 studies were excluded at the full-text level: 166 studies were initiated by a third party, 22 studies did not contain claims data, 11 were not self-insured employers, 9 were conducted outside of the United States, 5 were excluded study designs, 4 were not employee populations, and the full-text PDF of 5 was unavailable. A total of 41 studies meeting the predefined eligibility criteria were thus included in the review.

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Study flow diagram.

Study characteristics

Characteristics of the included studies are presented in Table 2 . The 41 studies were published between 1985 and 2022. There were 2 (5%) cross-sectional, 1 (2%) case–control, 1 (2%) ecological, and 37 (90%) cohort studies. The majority of studies (n = 21; 51%) were conducted by industry employers such as aluminum production, information technology, and retail companies. Nine (22%) studies were conducted among university staff while 7 (17%) were conducted in hospital system employees.

Table 2.

Characteristics of the Included Studies

StudyStudy designTime periodEmployerEmployer categoryObjectiveData sourcesExposure category a Outcome category a Patient privacy measures
Aguilar et al 14 Cohort2009–2011CernerIndustryAssess the impact of an employer's onsite pharmacy on health plan members' medication adherenceClaimsSpecific chronic condition: asthma, depression, diabetes, hyperlipidemia, hypertensionMedication adherenceIRB approval + deidentified data
Bernacki and Tsai 15 Cohort1992–2002Johns HopkinsUniversityAssess the success of integrated workers compensation claims management systemClaims + workers' compensation dataEmploymentWorkplace injury/illnessNR
Birnbaum et al 16 Cohort2004Chevron TexacoIndustryAssess the relative value of using laboratory, claims data to identify prevalence rates, and costs of metabolic syndromeClaims + health screening, personnel dataEmploymentSpecific health condition rate/costs: metabolic syndromeNR
Boscardin et al 17 Cohort2008–2009SafewayIndustryExamine the added value of self-reported health status data; predict who is at risk for being high cost in the futureClaims + self-reported health status biometrics, insurance enrollment dataEmploymentGeneral health care costsDeidentified data
Burks et al 18 Cohort2006–2009Schneider National Inc.IndustryEvaluate the effect of an employer-mandated OSA diagnosis and treatment program on non-OSA medical insurance claim costsClaims + human resource, sleep screening dataSpecific chronic condition: OSASpecific health condition rate/costs: OSAIRB approval
Burton et al 12 Cohort2009–2010American ExpressIndustryExamine associations between employee wellness program and health risks, health care costs, short-term disability absencesClaims + HRA, personnel dataEnrollment in health planEvaluation of employee wellness programNR
Burton et al 19 Cohort2012American ExpressIndustryExamine health risks, medical conditions, and workplace economic outcomes associated with self-reported hours of sleepClaims + HRA dataSpecific chronic condition: sleep hoursGeneral health care costsIRB
Clark et al 20 Cohort, longitudinal pre-/postdesign2008–2011WalgreensIndustryAssess the impact on beneficiary adherence and plan sponsor cost of offering generic antidiabetic and antihyperlipidemic medications without cost sharingClaimsWellness program participationMedication adherenceNR
Colombi and Wood 21 Ecologic2004–2007PPG IndustriesIndustryDetermine the impact of population obesity on care utilization and cost of CVD conditionsClaims + HRA dataWellness program participationSpecific health condition rate/costs: obesity and CVDNR
Conover et al 22 Cohort2006–2008SAS InstituteIndustryExamine the relationship among use of an on-site employer-provided primary care medical clinic, and health services use and health plan costsClaims + human resource, on-site clinic dataOn-site clinic useOn-site vs off-site health care costsIRB approval + deidentified data
Cullen et al 23 Cohort1996–2003AlcoaIndustryDemonstrate that health claims data can be linked to other relevant databases such as personnel files and exposure data maintained by large employersClaims + occupational clinic records, industrial hygiene, personnel dataEmploymentWorkplace injury/illnessDeidentified data
Dupree et al 24 Cohort2012–2017University of MichiganUniversityInvestigate changes in IVF ratesClaimsEnrollment in health planSpecific health condition rate/costs: IVFIRB approval
Gerasimaviciute et al 25 Cohort2011–2013University of TexasUniversityExamine the reciprocal longitudinal associations between depression or anxiety with work-related injuryClaims + employee eligibility, workers' compensation dataSpecific chronic condition: depression, anxietyWorkplace injury/illnessNR
Gibbs et al 26 Cohort1978–1982Blue Cross Blue Shield of IndianaIndustryCompare participants in the on-site health promotion programs with other employees for health care utilizationClaims + health promotion program dataWellness program participationEvaluation of employee wellness programNR
Goetzel et al 27 Cohort2014Lockheed Martin CorporationIndustryEstimate the incidence, prevalence, and cost of metabolic syndrome and risk factors associated with the syndromeClaims + biometrics, HRA dataEnrollment in health planSpecific health condition rate/costs: metabolic syndromeNR
Goldberg et al 2 Cohort2013–2017Quest DiagnosticsIndustryReduce the annual cost of health care without reducing access to care or adversely affecting clinical outcomesClaims + health plan performance reports, wellness program dataSpecific chronic condition: heart failure, coronary artery disease, chronic obstructive pulmonary disease, diabetes, hypertension, obesity, back and neck painGeneral health care costsNR
Gunther et al 5 CohortNRMerckPharmaAchieve clear improvements in the health and well-being of the workforceClaims + biometrics, HRA, employee engagement survey dataEmploymentSpecific health condition rate/costs: various health conditionsNR
Hill et al 28 Cohort2004–2006Arkansas state and public schoolsGovernmentQuantify health plan costs associated with individual tobacco, obesity, and physical inactivity risksClaims + HRA dataEnrollment in health planGeneral health care costsDeidentified data
Hillson et al 29 Cohort2001–2005CentocorIndustryInvestigate the incidence, prevalence, treatment patterns, disease severity, and direct costs associated with UCClaimsSpecific chronic condition: UCSpecific health condition rate/costs: UCIRB approval
Hincapie-Castillo et al 30 Cohort2015–2019University of FloridaUniversityAssess the impact of the days' supply restriction from the House Bill 21 law on opioid prescribing changesClaimsSpecific prescription usePre- and posthealth care costsIRB approval
Johnson et al 31 Cohort2004–2009Arkansas public school and other state employeesGovernmentExamine PPI utilization and drug costs before and after (a) excluding esomeprazole from coverage and (b) implementing a TMAC, or reference-pricing benefit designClaimsSpecific prescription usePre- and posthealth care costsNR
Khatami et al 32 Cohort2001–2009University of Texas systemUniversityAssess the early expected benefits of waiving the copay on colonoscopy useClaimsEnrollment in health planPre- and posthealth care costsDeidentified data
Kindermann et al 33 Cohort2010–2012Cerner CorporationIndustryCompare the influence of on-site vs off-site chiropractic care on health care utilizationClaimsSpecific chronic condition: chiropractic careOn-site vs off-site health care costsIRB approval
Leung et al 34 Cohort2014–2019University of TexasUniversityCharacterize the longitudinal cost impact associated with a prevalent chronic illness with recurrent exacerbationsClaimsSpecific chronic condition: bipolar disorderSpecific health condition rate/costs: bipolar disorderDeidentified data
Liu et al 35 Cohort2004–2007PepsiCoIndustryExamine the impact of a comprehensive wellness program on medical costs and utilizationClaimsWellness program participationEvaluation of employee wellness programNR
Maeng et al 36 Cohort2016–2018University of RochesterUniversityAssess the potential economic impact of a unique value-based insurance designClaimsWellness program participationGeneral health care costsIRB approval + deidentified data
Maeng et al 37 Cohort2012–2015GeisingerHospital systemEvaluates the program impact on care utilization and total cost of careClaims + biometric dataWellness program participationEvaluation of employee wellness programIRB approval
Merrill et al 38 Cross-sectional2004–2008Salt Lake County governmentGovernmentEvaluate the impact of the Healthy Lifestyle Incentive Program on lowering the frequency and cost of prescription drug and medical claimsClaims + HRA dataWellness program participationEvaluation of employee wellness programNR
Naessens et al 39 CohortJanuary 2004Mayo ClinicHospital systemExplore effects of comorbidity and prior health care utilization on choice of employee health plans with different levels of cost sharingClaims + plan eligibility dataEmploymentEmployee characteristics by health planDeidentified data
Naydeck et al 40 Cohort2001–2006Highmark, Inc.IndustryCompare employees who participated in the program with risk-matched nonparticipants by total, annual health care expenditures, and return on investmentClaimsWellness program participationEvaluation of employee wellness programNR
Nundy et al 41 Cohort; quasi-experimental, 2-group, pre–post study2012–2013University of ChicagoUniversityExamine the impact of a 6-month mobile health demonstration project among adults with diabetesClaims + electronic health records, text messages, phone survey dataWellness program participationEvaluation of employee wellness programIRB approval
Osondu et al 42 Cross-sectional2014Baptist Health South FloridaHospital systemExamine the association of favorable cardiovascular health status with 1-year health care expenditures and resource utilizationClaims + HRA dataEmploymentSpecific health condition rate/costs: CVDIRB approval
Parkinson et al 43 Cohort2007–2011UPMC HealthHospital systemEvaluate the impact of MyHealth, a wellness program, on employee health and costsClaims + biometric, HRA dataWellness program participationEvaluation of employee wellness programNR
Reeve et al 44 Cohort, nested case-control1993–1997Ford Motor companyIndustryDetermine the impact of exposure to metal removal fluids on workers' respiratory health, specifically NMRDClaimsEmploymentSpecific health condition rate/costs: NMRDDeidentified data
Reid et al 45 Cohort, longitudinal pre/postdesign2011–2013Cerner CorporationIndustryMeasure the impact of a policy change on medication adherence, prescription fills, health care utilization, cost, and absenteeismClaimsSpecific chronic condition: anxiety, depressionMedication adherenceIRB approval + deidentified data
Rezaee et al 46 Cohort2008–2013Beaumont Health SystemHospital systemInvestigate MCC prevalence, and determine the relationship between MCCs and health care cost and utilizationClaimsSpecific chronic condition: 20 conditionsSpecific health condition rate/costs: various conditionsIRB approval
Rezaee et al 47 Cohort2008–2013Beaumont Hospital SystemHospital systemEvaluate the relationship between multiple chronic conditions and urolithiasisClaimsSpecific chronic condition: 20 conditionsSpecific health condition rate/costs: various conditionsIRB approval
Stenner et al 11 Cohort2012–2015Vanderbilt University Medical CenterHospital systemExamine the impact of therapeutic interchange alerts on the drug ordering behavior and the costsClaimsEnrollment in health planMedication adherenceCompliance with Declaration of Helsinki on Ethical Principles for Medical Research Involving Human Subjects
Taiwo et al 48 Case–control1996–2009Alcoa Inc.IndustryAssess the relationship between acoustic neuroma and participation in a hearing conservation program and possible occupational risk factorsClaims + Human resource, injury, industrial hygiene dataSpecific occupational injuryEvaluation of employee wellness programIRB approval + deidentified data
Tollen et al 49 Cohort2000–2002Humana Inc.IndustryDetermine whether the offering of a consumer-directed health plan is likely to cause risk segmentationClaims + enrollment, employee dataEnrollment in health planEmployee characteristics by health planNR
Wittayanukorn et al 50 Cohort2008–2010Auburn UniversityUniversityCompare clinical and economic outcomes between patients who received and those who did not receive medication therapy management servicesClaims + billing invoicesSpecific chronic condition: cardiovascular conditionsPre- and posthealth care costsIRB approval

a Exposure: condition for entry into the study, for example, employment within a company, presence of a disease, or a workplace intervention; outcome: evaluated endpoints, for example, health care costs, prevalence of a condition, rate of workplace injury.

CVD, cardiovascular disease; HRA, health risk appraisal; IRB, institutional review board; IVF, in vitro fertilization; MCC, multiple chronic condition; NMRD, nonmalignant respiratory disease; NR, not reported; OSA, obstructive sleep apnea; PPI, proton pump inhibitor; TMAC, therapeutic maximum allowable cost; UC, ulcerative colitis; UPMC, University of Pittsburgh Medical Center.

Objectives of the included studies ranged from understanding the existing employee health status to targeting a specific health condition and implementation of wellness programs. Of the 41 studies, 24 (59%) supplemented claims data with various other data sources, including biometrics, on-site clinic records, worker's compensation records, industrial hygiene exposure data, and human resource data to achieve study objectives.

Study exposures and outcomes

A variety of exposures and outcomes were examined in the included studies, shown in Figure 2A and B , respectively. The most common exposures were specific chronic conditions (n = 12; 29%), participation in a company wellness program (n = 10; 24%), and employment within the company (n = 8; 20%). Other exposures included enrollment in a health plan (n = 7; 17%), specific occupational injury (n = 1; 2%), specific prescription use (n = 2; 5%), and on-site clinic use (n = 1; 2%). The most common evaluated outcomes include the rate and costs associated with a specific health condition (n = 12; 29%), effectiveness of employee wellness programs (n = 9; 22%), and general health care costs (n = 5; 12%).

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(A) Exposures examined in the included studies. (B) Outcomes examined in the included studies.

Additional outcomes included health care costs pre- and postintervention (n = 4; 10%), medication adherence (n = 4; 10%), workplace injury/illness (n = 3; 7%), on-site versus off-site care (n = 2; 5%), and employee characteristics by health plan (n = 2; 5%). Refer to Table 2 for the specific chronic and health conditions considered in these studies.

Measures to protect patient confidentiality and privacy

Of the 41 studies, 12 (29%) reported that the study was approved by an institutional review board (IRB) while 7 (17%) indicated that the authors received deidentified data for analysis ( Table 2 ). Five (12%) studies noted both an IRB approval and receipt of deidentified data. Compliance with the Declaration of Helsinki on Ethical Principles for Medical Research Involving Human Subjects was reported in 1 study (2%). 11 Sixteen studies (39%) did not report on how confidentiality and privacy were maintained throughout study conduct.

Discussion

This ScR reviewed 41 studies published between 1985 and 2022 that described the ways in which self-insured employers have examined their employee health claims data in the United States. The majority were cohort studies conducted by industry employers and supplemented claims data with other data sources such as industrial hygiene data. A variety of exposures, such as specific prescription use or participation in a wellness program, and outcomes, such as cost-effectiveness of an on-site clinic or the rate and cost of a specific health condition, were examined in the studies.

The authors of the included studies identified several lessons learned from conducting these analyses of the employee health claims data, including both global themes pertaining to the health of the entire workforce and more program-specific conclusions. Several studies concluded that adequate and continued investments are needed to build a culture of wellness. Others stated that diverse data sets are essential for understanding the current health status of employees and identify gaps for improvement within the organization.

One study indicated that it is imperative that preventive and disease management services are offered so that low-risk employees may remain in the low-risk group while high-risk employees may achieve better health over time through utilization of those services. Studies that evaluated program-specific objectives concluded that on-site health services, especially employer-sponsored pharmacies, may reduce medication adherence barriers, and savings from on-site clinics are dependent on the cost of care compared with avoided claim costs.

Another study reported that worker's compensation costs were found to decline with the use of a small network of health care providers who maintained effective communication between them. Medication therapy management services were found to be a significant factor in achieving health goals and improving disease states as well as reduction of pharmacy, medical, and overall expenditures in several studies. Lastly, as the workforce age, distribution shifts to younger workers, 1 study concluded that employers will need to address a growing demand for mental health services.

Strengths of the included studies and analyses using claims data include the diverse study populations and outcomes evaluated across studies. The employer-led analyses were able to draw on large amounts of data covering historical and current information on health care utilization, rates of diseases and conditions, and costs to both employee and employer. Moreover, these large claims data sets were able to be linked with smaller sources such as industrial hygiene and workers' compensation data to add valuable information to the analyses not available from claims data. Several limitations were also identified by the study authors.

This review only identified 41 studies that may reflect publication bias; many self-insured companies have access to claims data and may conduct analyses but for reasons unknown, not many studies are published. The populations are often self-selected, such as voluntary participation in wellness programs or use of on-site care, which may limit the generalizability of the results. Majority of studies were from industry with limited representation from government entities. Use of self-reported data such as health risk assessments to supplement the claims data could bias the outcomes since not all individuals self-report health information accurately due to poor recall, potential stigma regarding certain conditions, or fear of recourse by the employer.

There is also the potential for underestimation of adverse health outcomes because of the healthy worker effect (ie, active employees tend to be healthier than the unemployed) and the fact that some outcomes, such as obesity, may not be able to be captured appropriately in claims data. Lastly, costs may be underestimated since most of these studies did not consider administration costs of programs or policy changes.

When examining claims data, it is critical to protect patient and employee privacy. A strategic collaboration between employees and employers as they determine what programs are needed could help gain employee buy-in into these changes and motivate them to participate in additional data collection methods. As seen in many of the included studies, other sources of data were utilized to supplement information gained from claims. For example, 1 employer combined claims data with health risk appraisal (HRA) and company personnel data to evaluate the effectiveness of their new wellness program. 12 The addition of HRA data increased awareness of employee's health status, which, in turn, increased participation in the program. Employer investment in such a program lowered health costs and improved productivity.

Many studies were excluded because they were initiated by third parties such as pharmaceutical companies to assess the effectiveness of a drug/s, etc. One excluded study that evaluated the cost of asthma to an employer was supported by a grant from Immunex, a biotech company that developed asthma and other treatments, and conducted by several research groups. 13 A limitation noted by the authors was the lack of information on lifestyle factors and comorbid conditions that could impact asthma severity and related costs. Short-term medical-related absences without claims and reduced productivity when ill employees remained at work were costs to employers that were not captured in analyses.

Had the employer been involved and included buy-in from employees, this information may have been able to be collected for a more robust analysis of asthma and impact on its employees. Strategic investments in employee health not only benefit the employees but also improve productivity, job satisfaction, and could result in savings for employers.

This ScR had several strengths, including strong study methodology involving a priori registration of the study protocol, adherence to the PRISMA-ScR framework, and inclusion of multiple exposures and outcomes of employee populations with self-insuring employers. Since the ScR was specific to the United States and self-insured employee populations, findings may not be generalizable to those outside of the United States or companies that are not self-insured. Furthermore, the review was unable to account for changes in measures to maintain patient privacy and reporting guidelines over time.

Self-insured employers across varied sectors have used employee health claims data to gain insights into their employees' health, well-being, productivity, and health care utilization. These data offer the ability to investigate a range of objectives since multiple exposures and outcomes can be assessed simultaneously with continued follow-up. Once gaps are identified, different departments across the organizations can join to determine the efforts required to build a culture of wellness. Employee health claims data offer a unique opportunity for employers to yield additional savings in the long run through implementation of wellness and other targeted programs and have a lasting, positive impact on their employees.

Author Disclosure Statement

N.M., S.T.P., and L.C.B. are employees of EpidStrategies and received funding from ExxonMobil Biomedical Sciences, Inc. for this study. S.V.R. is an employee of ExxonMobil Biomedical Sciences, Inc. and may hold shares and/or stock options in the company. R.J.L. is a contractor with ExxonMobil Biomedical Sciences, Inc. and may hold shares and/or stock options in the company.

Funding Information

This study was funded by ExxonMobil Biomedical Sciences, Inc.