Deep Dive Randomized Control Trial

Inclusion criteria

• All employees, dependents and retirees in one of seven large employer groups, including a state university system, a state employee group, two manufacturing companies, a natural resource extraction company, a public educational service agency, and a nonprofit multiple employer association for independent colleges were eligible for inclusion.

Exclusion criteria

• no financial information was available from their facility and professional claims;
• they were in an employer sub-group ineligible for care support services;
• they asked not be to contacted or were deceased;
• gender information was missing from their eligibility files;
• their claims data from the year prior to the start of the study indicated diagnoses of HIV, AIDS, end-stage renal disease (ESRD), organ transplants, or necrotizing fasciitis (intended to improve the likelihood of a balanced distribution of costs and conditions); OR
• they were in an employer sub-group with less than four months of enrollment prior to the study start date (resulting in too little information for stratification).