Table 1 Characteristics of male bus drivers
From: Cardiovascular Disease Risk of Bus Drivers in a City of Korea
| Â | Regular | Â | Irregular | Â | Total | Â | p-value* | |
|---|---|---|---|---|---|---|---|---|
Age (yr) | Â | Â | Â | Â | Â | Â | Â | |
| Â | < 50 | 107 | (31.1) | 16 | (18.0) | 123 | (28.4) | 0.000 |
| Â | 50-59 | 232 | (67.4) | 24 | (27.0) | 256 | (59.1) | Â |
|  | ≥ 60 | 5 | ( 1.5) | 49 | (55.0) | 54 | (12.5) |  |
Work duration (yr) | Â | Â | Â | Â | Â | Â | Â | |
| Â | <20 | 143 | (41.6) | 21 | (23.6) | 164 | (37.9) | 0.001 |
| Â | 20-29 | 107 | (31.1) | 26 | (29.2) | 133 | (30.7) | Â |
|  | ≥30 | 94 | (27.3) | 42 | (47.2) | 136 | (31.4) |  |
PDAR | Â | Â | Â | Â | Â | Â | Â | |
| Â | <0.5 | 214 | (62.2) | 41 | (46.1) | 255 | (58.9) | 0.004 |
|  | ≥0.5 | 130 | (37.8) | 48 | (53.9) | 178 | (41.1) |  |
Shift pattern of duty | Â | Â | Â | Â | Â | Â | Â | |
| Â | Double | 328 | (95.3) | 5 | ( 5.6) | 333 | (76.9) | 0.000 |
| Â | Alternate | 16 | ( 4.7) | 84 | (94.4) | 100 | (23.1) | Â |
Total | 344 | (100.0) | 89 | (100.0) | 433 | (100.0) | Â | |