Table 2 General characteristics of the selected population according to number of working hours per week
From: Effect of Long Working Hours on Self-reported Hypertension among Middle-aged and Older Wage Workers
Characteristics | Number of working hours per week | |||||
|---|---|---|---|---|---|---|
≤40 | 41–50 | 51–60 | ≥61 | p | ||
(n = 476) | (n = 366) | (n = 199) | (n = 165) | |||
Male, n (%) | 286 (67.9) | 223 (66.2) | 117 (65.7) | 77 (53.8) | 0.022 | |
Age, years (SD) | 52.1 (5.8) | 52.0 (5.7) | 52.3 (6.6) | 54.1 (7.1) | *0.003 | |
Education | Â | Â | Â | Â | Â | |
| Â | Elementary school graduation or less | 83 (19.7) | 51 (15.1) | 39 (21.9) | 45 (31.5) | <0.001 |
| Â | Middle school graduation | 65 (15.4) | 70 (20.8) | 39 (21.9) | 43 (30.1) | Â |
| Â | High school graduation | 156 (37.1) | 148 (43.9) | 80 (44.9) | 47 (32.9) | Â |
| Â | College graduation or beyond | 117 (27.8) | 68 (20.2) | 80 (11.2) | 8 (5.6) | Â |
Income (won) | Â | Â | Â | Â | Â | |
|  | ≤990,000 | 134 (31.8) | 76 (22.6) | 41 (23.0) | 61 (42.7) | <0.001 |
| Â | 1,000,000-1,990,000 | 98 (23.3) | 117 (34.7) | 86 (48.3) | 61 (42.7) | Â |
| Â | 2,000,000-2,990,000 | 59 (14.0) | 71 (21.1) | 33 (18.5) | 15 (10.5) | Â |
|  | ≥3,000,000 | 117 (27.8) | 64 (19.0) | 13 (7.3) | 4 (2.8) |  |
| Â | Neglect to answer | 13 (3.1) | 9 (2.7) | 5 (2.8) | 2 (1.4) | Â |
Occupation | Â | Â | Â | Â | Â | |
| Â | Managers, professional and experts | 93 (22.1) | 62 (18.4) | 16 (9.0) | 3 (2.1) | <0.001 |
| Â | Engineers, semi-experts | 36 (8.6) | 22 (6.5) | 3 (1.7) | 2 (1.4) | Â |
| Â | Office workers | 48 (11.4) | 32 (9.5) | 16 (9.0) | 4 (2.8) | Â |
| Â | Service and sales workers | 46 (10.9) | 32 (9.5) | 30 (16.9) | 49 (34.3) | Â |
| Â | Skilled agricultural, forestry and fisheries workers | 7 (1.7) | 5 (1.6) | 3 (1.7) | 3 (1.7) | Â |
| Â | Craft and related trades workers | 39 (9.3) | 50 (14.8) | 33 (18.5) | 9 (6.3) | Â |
| Â | Machine operators, assembly workers | 41 (9.7) | 43 (12.8) | 26 (14.6) | 22 (15.4) | Â |
| Â | Elementary workers | 111 (26.4) | 91 (27.0) | 51 (28.7) | 51 (35.7) | Â |
Form of employment | Â | Â | Â | Â | Â | |
| Â | Regular | 281 (66.7) | 264 (78.3) | 138 (77.5) | 89 (62.2) | <0.001 |
| Â | Temporary or part-time | 140 (33.3) | 73 (21.7) | 40 (22.5) | 54 (37.8) | Â |
BMI | Â | Â | Â | Â | Â | |
| Â | kg/m2 (SD) | 23.25 (2.8) | 23.2 (2.5) | 23.0 (2.5) | 23.0 (2.8) | *0.731 |
Alcohol habit | Â | Â | Â | Â | Â | |
| Â | Yes, n (%) | 261 (62.0) | 188 (55.8) | 99 (55.6) | 78 (54.5) | 0.208 |
Smoking habit | Â | Â | Â | Â | Â | |
| Â | Current smoker, n (%) | 141 (33.5) | 95 (28.2) | 55 (30.9) | 53 (37.1) | 0.215 |
Exercise | Â | Â | Â | Â | Â | |
| Â | Less than once a week, n(%) | 212 (50.4) | 200 (59.3) | 130 (73.0) | 104 (72.7) | <0.001 |
Working days per week | Â | Â | Â | Â | Â | |
|  | ≥6 days, n (%) | 40 (9.5) | 230 (68.2) | 159 (89.3) | 111 (77.6) | <0.001 |
Self-reported hypertension during follow-up | Â | Â | Â | Â | Â | |
| Â | Yes, n (%) | 24 (5.7) | 31 (9.2) | 14 (7.9) | 16 (11.2) | 0.126 |