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Shift work and the risk of metabolic syndrome among healthcare workers: a comparative cross-sectional study.

OBJECTIVE
This study evaluated the association between shift work and metabolic syndrome (MetS) among a group of healthcare workers in Sri Lanka.


METHODS
This study was in comparative cross-sectional design with 78 shift and non-shift workers aged ≥18 years. Data were collected through questionnaires, anthropometric measures and blood tests. MetS was diagnosed based on the International Diabetes Federation (IDF) and modified NCEP ATP-III criteria.


RESULTS
The prevalence of MetS according to IDF criteria was 16.2% and 36.6% among day and shift workers (P = 0.043). According to modified NCEP ATP-III, 18.9% day workers and 36.6% shift workers had MetS (P = 0.083). The best predictors of MetS were age (OR 1.07; 95% CI, 1.02-1.12; P = 0.008) and shift work (OR 2.78; CI, 0.90-8.72; P = 0.076).


CONCLUSION
Shift workers had a more than 2-fold increased risk of developing MetS than day workers. Intervention targeting diet, physical activity, awareness sessions and health screenings should be promoted.