Table 3 Odds ratios for metabolic syndrome associated with working hours stratified by age among men in Japan, 2009
From: Long working hours and metabolic syndrome among Japanese men: a cross-sectional study
|  | <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) |