Working hours per day | p for trend3-150 | |||||
---|---|---|---|---|---|---|
<8.0 | 8.0–8.9 | 9.0–9.9 | 10.0–10.9 | ⩾11.0 | ||
Hypertension above the borderline level | ||||||
Cases | 113 | 92 | 61 | 41 | 29 | |
Person years | 1022 | 969 | 695 | 645 | 610 | |
Rate per 1000 person years | 110.6 | 94.9 | 87.8 | 63.6 | 47.6 | |
Age adjusted relative risk | 1.00 | 0.86 | 0.81 | 0.60 | 0.45 | <0.001 |
(95% CI) | (Reference) | (0.66, 1.14) | (0.60, 1.11) | (0.42, 0.87) | (0.30, 0.68) | |
Multivariate adjusted relative risk3-151 | 1.00 | 0.91 | 0.79 | 0.63 | 0.48 | <0.001 |
(95% CI) | (Reference) | (0.69, 1.21) | (0.57, 1.08) | (0.43, 0.91) | (0.31, 0.74) | |
Definite hypertension | ||||||
Cases | 31 | 23 | 20 | 10 | 4 | |
Person years | 1221 | 1160 | 782 | 711 | 658 | |
Rate per 1000 person years | 25.4 | 19.8 | 25.6 | 14.1 | 6.1 | |
Age adjusted relative risk | 1.00 | 0.78 | 1.03 | 0.57 | 0.25 | 0.010 |
(95% CI) | (Reference) | (0.45, 1.34) | (0.58, 1.81) | (0.28, 1.18) | (0.09, 0.70) | |
Multivariate adjusted relative risk3-151 | 1.00 | 0.68 | 0.93 | 0.56 | 0.33 | 0.045 |
(95% CI) | (Reference) | (0.39, 1.18) | (0.53, 1.65) | (0.27, 1.17) | (0.11, 0.95) |
↵3-150 The test for trend is calculated across increasing categories of working hours per day.
↵3-151 Controls for age, occupation, position, mean arterial blood pressure, body mass index, alcohol intake, cigarette smoking, eating breakfast, vegetable consumption, fruit consumption, regular physical exercise, salt intake, hours of sleep, and hours of commutation at baseline.