Table 1.
Characteristics of male bus drivers
| Regular | Irregular | Total | p-value* | |||||
|---|---|---|---|---|---|---|---|---|
| Age (yr) |
|
|
|
|
|
|
|
|
| |
< 50 |
107 |
(31.1) |
16 |
(18.0) |
123 |
(28.4) |
0.000 |
| |
50-59 |
232 |
(67.4) |
24 |
(27.0) |
256 |
(59.1) |
|
| |
≥ 60 |
5 |
( 1.5) |
49 |
(55.0) |
54 |
(12.5) |
|
| Work duration (yr) |
|
|
|
|
|
|
|
|
| |
<20 |
143 |
(41.6) |
21 |
(23.6) |
164 |
(37.9) |
0.001 |
| |
20-29 |
107 |
(31.1) |
26 |
(29.2) |
133 |
(30.7) |
|
| |
≥30 |
94 |
(27.3) |
42 |
(47.2) |
136 |
(31.4) |
|
| PDAR |
|
|
|
|
|
|
|
|
| |
<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 |
|
|
|
|
|
|
|
|
| |
Double |
328 |
(95.3) |
5 |
( 5.6) |
333 |
(76.9) |
0.000 |
| |
Alternate |
16 |
( 4.7) |
84 |
(94.4) |
100 |
(23.1) |
|
| Total | 344 | (100.0) | 89 | (100.0) | 433 | (100.0) | ||
*p-value were tested by chi-square test.
PDAR, professional driving duration/age ratio.
Shift pattern, double: work 8 hours every day. Alternate: work more than 12 hours every other day.