From: Factors related with quality on sleep of daytime workers
Variables | Sleep duration | Sleep duration | |||
---|---|---|---|---|---|
Mean ± SD | p-valuea | Fewer than 6 h | Over than 6 h | ||
n (%) | n (%) | p-valueb | |||
Age (in years) | 0.384 | 0.009 | |||
< 30 | 6.37 ± 1.03 | 102 (49.3) | 105 (50.7) | ||
30–39 | 6.41 ± 0.96 | 232 (44.4) | 291 (55.6) | ||
40–49 | 6.32 ± 0.97 | 144 (53.9) | 123 (46.1) | ||
≧50 | 6.27 ± 1.09 | 87 (57.6) | 64 (42.4) | ||
Sex | 0.570 | 0.871 | |||
Male | 6.36 ± 0.95 | 516 (49.1) | 534 (50.9) | ||
Female | 6.42 ± 1.32 | 49 (50.0) | 49 (50.0) | ||
Working period (years) | 0.502 | 0.776 | |||
≦5 | 6.43 ± 0.92 | 110 (47.2) | 123 (52.8) | ||
6–10 | 6.44 ± 0.99 | 74 (42.3) | 101 (57.7) | ||
11–15 | 6.38 ± 0.97 | 76 (46.6) | 87 (53.4) | ||
≧16 | 6.57 ± 1.10 | 39 (44.8) | 48 (55.2) | ||
Work type | 0.006 | 0.004 | |||
Blue-collar | 6.42 ± 0.94 | 262 (44.9) | 322 (55.1) | ||
Office worker | 6.38 ± 1.09 | 152 (52.2) | 139 (47.8) | ||
Researcher | 6.17 ± 0.94 | 116 (57.4) | 86 (42.6) | ||
Smoking | 0.171 | 0.580 | |||
Non-smoker | 6.42 ± 1.02 | 230 (46.8) | 261 (53.2) | ||
Ex-smoker | 6.44 ± 1.05 | 116 (47.5) | 128 (52.5) | ||
Current-smoker | 6.31 ± 0.89 | 172 (50.4) | 169 (49.6) | ||
Alcohol drinking | 0.703 | 0.481 | |||
Non-drinker | 6.42 ± 1.04 | 57 (44.9) | 70 (55.1) | ||
1/week | 6.40 ± 0.97 | 241 (47.3) | 269 (52.7) | ||
Over 2/week | 6.36 ± 0.99 | 220 (50.2) | 218 (49.8) | ||
Exercise | 0.187 | 0.238 | |||
No | 6.41 ± 1.00 | 332 (46.9) | 376 (53.1) | ||
Yes | 6.33 ± 0.95 | 186 (50.7) | 181 (49.3) | ||
BMI (kg/m2)c | 0.308 | 0.186 | |||
< 23 | 6.43 ± 0.97 | 179 (44.9) | 220 (55.1) | ||
23–25 | 6.37 ± 0.99 | 152 (49.7) | 154 (50.3) | ||
25–30 | 6.30 ± 1.00 | 204 (52.4) | 185 (47.6) | ||
≧30 | 6.30 ± 1.14 | 25 (52.1) | 23 (47.9) | ||
Metabolic syndrome | 0.115 | 0.021 | |||
No | 6.38 ± 0.96 | 477 (47.7) | 522 (52.3) | ||
Yes | 6.24 ± 1.20 | 83 (58.0) | 60 (42.0) | ||
Musculoskeletal Pain | 0.058 | 0.126 | |||
No | 6.39 ± 0.96 | 430 (48.2) | 463 (51.8) | ||
Yes | 6.24 ± 1.11 | 100 (54.3) | 84 (45.7) |