Second-year results of an obesity prevention program at the Dow Chemical Company.

OBJECTIVE: Evaluate innovative, evidence-based approaches to organizational/supportive environmental interventions aimed at reducing the prevalence of obesity among Dow employees after 2 years of implementation. METHODS: A quasi-experimental study design compared outcomes for two levels of intervention intensity with a control group. Propensity scores were used to weight baseline differences between intervention and control subjects. Difference-in-differences methods and multilevel modeling were used to control for individual and site-level confounders. RESULTS: Intervention participants maintained their weight and body mass index, whereas control participants gained 1.3 pounds and increased their body mass index values by 0.2 over 2 years. Significant differences in blood pressure and cholesterol values were observed when comparing intervention employees with controls. At higher intensity sites, improvements were more pronounced. CONCLUSIONS: Environmental interventions at the workplace can support weight management and risk reduction after 2 years.

First-year results of an obesity prevention program at The Dow Chemical Company.

OBJECTIVE: To examine first-year results from a workplace environmental obesity prevention program at The Dow Chemical Company. METHODS: A quasi-experimental cohort study was conducted among employees at nine treatment worksites (n = 8013) who received environmental weight management interventions and three control worksites (n = 2269). Changes in employees' weight, body mass index (BMI), and other health risks were examined using chi2 and t-tests. RESULTS: After 1 year, a modest treatment effect was observed for weight and BMI largely because the control group subjects gained weight; however, no effect was observed for overweight and obesity prevalence. Other risk factors (tobacco use, high blood pressure, and systolic and diastolic blood pressure values) decreased significantly, although blood glucose (high risk prevalence and values) increased. CONCLUSIONS: Environmental changes to the workplace can achieve modest improvements in employees' health risks, including weight and BMI measures, in 1 year.

Development of the Environmental Assessment Tool (EAT) to measure organizational physical and social support for worksite obesity prevention programs.

OBJECTIVE: To describe the development, reliability, and validity of the Environmental Assessment Tool (EAT) for assessing worksite physical and social environmental support for obesity prevention. METHODS: The EAT was developed using a multistep process. Inter-rater reliability was estimated via Kappa and other measures. Concurrent and predictive validity were estimated using site-level correlations and person-level multiple regression analyses comparing EAT scores and employee absenteeism and health care expenditures. RESULTS: Results show high inter-rater reliability and concurrent validity for many measures and predictive validity for absenteeism expenditures. CONCLUSIONS: The primary use of the EAT is as a physical and social environment assessment tool for worksite obesity prevention efforts. It can be used as a reliable and valid means to estimate relationships between environmental interventions and absenteeism and medical expenditures, provided those expenditures are for the same year that the EAT is administered.

Using formative research to develop environmental and ecological interventions to address overweight and obesity.

OBJECTIVE: This paper presents the formative research phase of a large multi-site intervention study conducted to inform the feasibility of introducing environmental and ecological interventions. RESEARCH METHODS AND PROCEDURES: Using mixed methods that included an environmental assessment, climate survey, leadership focus groups and interviews, and archival data, information was collected on employee health and job factors, the physical environment, social-organizational environment, and current health programs. RESULTS: Results show that 83% of employees at the study sites were overweight or obese. Leadership was very supportive of health initiatives and felt integrating the strategies into organizational operations would increase their likelihood of success. Environmental assessment scores ranged from 47 to 19 on a 100-point scale. Health services personnel tended to view the organizational climate for health more positively than site leadership (mean of 3.6 vs. 3.0, respectively). DISCUSSION: Intervention strategies chosen included increasing healthy food choices in vending, cafeterias, and company meetings, providing a walking path, targeting messages, developing site goals, training leaders, and establishing leaders at the work group level.