A worksite intervention to reduce the cardiovascular risk: Proposal of a study design easy to integrate within Italian organization of occupational health surveillance

Background: Despite the substantial amount of knowledge on effectiveness of worksite health promotion (WHP) in reducing cardiovascular disease (CVD) risk, WHP programs are not systematically applied in Italy. The aim was to design an intervention easy to integrate within the Italian organization of workplace health surveillance. Methods: We used the "pretest-posttest design". Workers were employed in multiple occupations and resident in Veneto region, Italy. Occupational physicians (OPs) performed all examinations, including laboratory evaluation (capillary blood sampling and measure of glycaemia and cholesterolemia with portable devices), during the normal health surveillance at worksite. CVD risk was computed based on sex, age, smoking habit, diabetes, systolic pressure and cholesterol level. After excluding those with 5%) as well as the exact McNemar significance probability or the exact test of table symmetry. Results: CVD risk decreased by 24% (McNemar p = 0.0000) after the intervention; in a sensitivity analysis assuming that all subjects lost to follow-up kept their pretest cardiovascular risk value, the effect (-18%) was still significant (symmetry p < 0.0000). Each prevented CVD case was expected to cost about 5,700 euro. Conclusions: The present worksite intervention promoted favorable changes of CVD risk that were reasonably priced and consistent across multiple occupations.