Table 3

Odds ratios for metabolic syndrome associated with working hours stratified by age among men in Japan, 2009
<40 years ≥40 years
(n = 334) (n = 569)
Working hours OR a (95% CI) OR a (95% CI)
≥7 to 8 hours/day 1.00 Reference 1.00 Reference
>8 to 9 hours/day 0.62 (0.13–2.96) 2.02 (1.04–3.90)
>9 to 10 hours/day 1.93 (0.59–6.34) 1.21 (0.53–2.77)
>10 hours/day 0.77 (0.14–4.14) 3.14 (1.24–7.95)

CI confidence interval, OR odds ratio.

a Adjusted for age (continuous), occupation, shift work, smoking status, frequency of alcohol consumption, and cohabiting status.

Kobayashi et al.

Kobayashi et al. BMC Public Health 2012 12:395   doi:10.1186/1471-2458-12-395

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