This study was implemented by a comprehensive cancer center (Dana-Farber Cancer Institute) in partnership with a labor union (Service Employees International Union). Twenty-seven worksites were recruited; 1 site underwent significant downsizing following baseline data collection that rendered the site ineligible for study participation, leaving 26 sites.
Following baseline assessments, sites were blocked on industry type (health care, state agency, or university), number of employees, and physical plant (single vs multiple buildings), and they were randomly assigned to intervention
or comparison conditions. Intervention worksites received a 16-month intervention aimed at improving adherence to screening guidelines for breast and cervical cancer among women 40 years and older. Comparison sites received
a workshop at the conclusion of the study period that provided participants with skills and
resources to replicate the program. The evaluation of intervention effectiveness was based on the worksite-wide mean screening rates for mammography, clinical breast examination, and Pap test at baseline and follow-up, and effectiveness was assessed through 2 cross-sectional surveys of the women employees 40 years and older. A process evaluation system was developed to document intervention delivery and program participation.