Table 5. Relations between OWH/SWH and health checkup data.
| Objective working hours |
N | Adjusted meana (SE) |
p-values, hoursb |
Multiple comparisonc |
Subjective working hours |
N | Adjusted meana (SE) |
p-values, hours |
|
|---|---|---|---|---|---|---|---|---|---|
| BMI | ≥1 to 35 h/w | 39 | 23.2 (0.61) | 0.77 | ≥1 to 35 h/w | 780 | 23.4 (0.14) | 0.09 | |
| ≥35 to 50 h/w | 1,716 | 23.2 (0.10) | ≥35 to 50 h/w | 4,006 | 23.2 (0.06) | ||||
| ≥50 to 60 h/w | 3,414 | 23.2 (0.07) | ≥50 to 60 h/w | 607 | 22.9 (0.16) | ||||
| ≥60 h/w | 343 | 23.0 (0.22) | ≥60 h/w | 154 | 23.0 (0.31) | ||||
| Systolic blood pressure | ≥1 to 35 h/w | 39 | 110.7 (2.40) | <0.01 | 1<2d | ≥1 to 35 h/w | 780 | 116.5 (0.54) | 0.29 |
| ≥35 to 50 h/w | 1,715 | 117.2 (0.37) | ≥35 to 50 h/w | 4,005 | 116.8 (0.24) | ||||
| ≥50 to 60 h/w | 3,414 | 116.5 (0.26) | ≥50 to 60 h/w | 607 | 115.5 (0.62) | ||||
| ≥60 h/w | 343 | 114.8 (0.85) | ≥60 h/w | 154 | 117.1 (1.21) | ||||
| Diastolic blood pressure | ≥1 to 35 h/w | 39 | 68.5 (1.76) | <0.01 | 2>4 | ≥1 to 35 h/w | 780 | 70.9 (0.39) | 0.13 |
| ≥35 to 50 h/w | 1,715 | 72.0 (0.27) | ≥35 to 50 h/w | 4,005 | 71.6 (0.17) | ||||
| ≥ 50 to 60 h/w | 3,414 | 71.2 (0.19) | ≥50 to 60 h/w | 607 | 70.7 (0.45) | ||||
| ≥60 h/w | 343 | 70.0 (0.62) | ≥60 h/w | 154 | 72.3 (0.89) | ||||
| AST | ≥1 to 35 h/w | 39 | 26.0 (1.97) | 0.38 | ≥1 to 35 h/w | 779 | 23.4 (0.46) | 0.14 | |
| ≥35 to 50 h/w | 1,712 | 22.7 (0.31) | ≥35 to 50 h/w | 4,000 | 22.7 (0.20) | ||||
| ≥50 to 60 h/w | 3,411 | 22.6 (0.21) | ≥50 to 60 h/w | 607 | 21.8 (0.53) | ||||
| ≥60 h/w | 343 | 22.3 (0.70) | ≥60 h/w | 154 | 21.9 (1.04) | ||||
| ALT | ≥1 to 35 h/w | 39 | 27.4 (3.77) | 0.50 | ≥1 to 35 h/w | 779 | 27.9 (0.89) | 0.18 | |
| ≥35 to 50 h/w | 1,712 | 26.0 (0.59) | ≥35 to 50 h/w | 4,000 | 26.8 (0.39) | ||||
| ≥50 to 60 h/w | 3,410 | 27.0 (0.41) | ≥50 to 60 h/w | 606 | 25.0 (1.02) | ||||
| ≥60 h/w | 343 | 27.4 (1.33) | ≥60 h/w | 154 | 27.5 (1.99) | ||||
| GGT | ≥1 to 35 h/w | 39 | 63.8 (8.38) | <0.01 | 1>2 | ≥1 to 35 h/w | 779 | 39.1 (1.91) | 0.51 |
| ≥35 to 50 h/w | 1,711 | 40.5 (1.30) | ≥35 to 50 h/w | 3,999 | 40.5 (0.84) | ||||
| ≥50 to 60 h/w | 3,411 | 39.9 (0.90) | ≥50 to 60 h/w | 607 | 39.4 (2.19) | ||||
| ≥60 h/w | 343 | 33.2 (2.96) | ≥60 h/w | 154 | 34.5 (4.29) | ||||
| Fasting blood glucose | ≥1 to 35 h/w | 20 | 99.1 (4.38) | 0.28 | ≥1 to 35 h/w | 512 | 92.5 (0.88) | 0.93 | |
| ≥35 to 50 h/w | 1,139 | 92.9 (0.60) | ≥35 to 50 h/w | 2,644 | 92.3 (0.39) | ||||
| ≥50 to 60 h/w | 2,260 | 92.0 (0.42) | ≥50 to 60 h/w | 372 | 93.1 (1.04) | ||||
| ≥60 h/w | 179 | 92.2 (1.52) | ≥60 h/w | 96 | 92.6 (2.03) | ||||
| HbA1c | ≥1 to 35 h/w | 35 | 5.6 (0.11) | 0.44 | ≥1 to 35 h/w | 488 | 5.5 (0.03) | 0.93 | |
| ≥35 to 50 h/w | 1,175 | 5.5 (0.02) | ≥35 to 50 h/w | 2,825 | 5.5 (0.01) | ||||
| ≥50 to 60 h/w | 2,364 | 5.5 (0.01) | ≥50 to 60 h/w | 494 | 5.5 (0.03) | ||||
| ≥60 h/w | 329 | 5.4 (0.04) | ≥60 h/w | 126 | 5.5 (0.06) | ||||
| HDL cholesterol | ≥1 to 35 h/w | 39 | 55.4 (2.20) | 0.55 | ≥1 to 35 h/w | 777 | 57.9 (0.49) | 0.71 | |
| ≥35 to 50 h/w | 1,709 | 58.3 (0.34) | ≥35 to 50 h/w | 3,994 | 58.3 (0.22) | ||||
| ≥ 50 to 60 h/w | 3,405 | 58.3 (0.24) | ≥50 to 60 h/w | 605 | 58.3 (0.57) | ||||
| ≥60 h/w | 342 | 57.8 (0.78) | ≥60 h/w | 154 | 57.4 (1.11) | ||||
| LDL cholesterol | ≥1 to 35 h/w | 39 | 110.2 (4.73) | <0.01 | 2<3 | ≥1 to 35 h/w | 779 | 114.2 (1.07) | 0.40 |
| ≥35 to 50 h/w | 1,712 | 112.3 (0.73) | ≥35 to 50 h/w | 3,997 | 114.3 (0.47) | ||||
| ≥50 to 60 h/w | 3,407 | 115.3 (0.51) | ≥50 to 60 h/w | 606 | 114.6 (1.23) | ||||
| ≥60 h/w | 343 | 116.5 (1.67) | ≥60 h/w | 154 | 118.5 (2.40) | ||||
| Triglyceride | ≥1 to 35 h/w | 39 | 128.1 (14.72) | 0.27 | ≥1 to 35 h/w | 779 | 113.3 (3.38) | 0.89 | |
| ≥35 to 50 h/w | 1,713 | 116.9 (2.29) | ≥35 to 50 h/w | 4,000 | 114.2 (1.48) | ||||
| ≥50 to 60 h/w | 3,410 | 112.2 (1.59) | ≥50 to 60 h/w | 607 | 113.1 (3.87) | ||||
| ≥60 h/w | 343 | 110.4 (5.20) | ≥60 h/w | 154 | 119.4 (7.57) |
a: adjusted for sex, age, employment type, job category, and work pattern. b: ANCOVA p-values for hours. c: Bonfferoni method. d: 1; ≥1 to 35 h/w, 2; ≥35 to 50 h/w, 3; ≥50 to 60 h/w, 4; ≥60 h/w, and reference group is 2. SE: standard error; OWH: objective working hours; SWH: subjective working hours; BMI: body mass index; AST: aspartate aminotransferase; ALT: alanine aminotransferase; GGT: gamma-glutamyl transpeptidase; HbA1c: hemoglobin A1c; HDL: high-density lipoprotein cholesterol; LDL: low-density lipoprotein cholesterol.