Table 2

Odds ratios for metabolic syndrome associated with working hours among men in Japan, 2009
Model 1 a Model 2 b Model 3 c
(n = 933) (n = 933) (n = 911)
Working hours OR (95% CI) OR (95% CI) OR (95% CI)
≥7 to 8 hours/day 1.00 Reference 1.00 Reference 1.00 Reference
>8 to 9 hours/day 1.58 (0.94–2.68) 1.56 (0.92–2.66) 1.66 (0.91–3.01)
>9 to 10 hours/day 1.17 (0.68–2.02) 1.31 (0.75–2.28) 1.48 (0.75–2.90)
>10 hours/day 1.19 (0.67–2.10) 1.47 (0.82–2.63) 2.32 (1.04–5.16)

CI confidence interval, OR odds ratio.

a Crude model.

b Adjusted for age (continuous).

c 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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