Table 1. Comparison of general and occupational characteristics between study and dropout/exclusion groups.
| Study group | Dropout/exclusion group | p-value† | ||||
|---|---|---|---|---|---|---|
| Mean (SD) | N* (%) | Mean (SD) | N* (%) | |||
| Total | 2,349 (65.8) | 1,223 (34.2) | ||||
| Gender | ||||||
| Male | 1,807 (76.9) | 935 (76.5) | 0.750 | |||
| Female | 542 (23.1) | 288 (23.5) | ||||
| Age (yr) | 37.25 (9.83) | 39.84 (10.85) | <0.001 | |||
| Marital status | ||||||
| Never married | 650 (31.6) | 188 (33.5) | 0.131 | |||
| Married | 1,386 (67.3) | 362 (64.4) | ||||
| Divorced or widowed | 24 (1.2) | 12 (2.1) | ||||
| Educational status | ||||||
| ≤Middle school | 44 (2.2) | 51 (9.3) | <0.001 | |||
| High school | 1,322 (64.8) | 348 (63.2) | ||||
| ≥College | 675 (33.1) | 152 (27.6) | ||||
| Sleeping time (h/d) | 6.71 (1.18) | 6.73 (1.17) | 0.784 | |||
| Employment status | ||||||
| Regular | 2,121 (92.3) | 535 (84.7) | <0.001 | |||
| Temporary | 176 (7.7) | 97 (15.3) | ||||
| Shift work | ||||||
| No | 801 (35.9) | 232 (38.7) | 0.194 | |||
| Yes | 1,433 (64.1) | 367 (61.3) | ||||
| Tenure | 12.55 (8.50) | 12.29 (9.73) | 0.545 | |||
| Working h/wk | 45.36 (8.18) | 45.13 (7.91) | 0.533 | |||
| Job stress | 2,349 (80.0) | 586 (20.0) | ||||
| High job demand | 43.83 (17.31) | 42.81 (16.91) | 0.201 | |||
| Insufficient job control | 56.35 (19.21) | 59.09 (21.48) | 0.005 | |||
| Inadequate social support | 38.54 (16.81) | 40.09 (19.75) | 0.079 | |||
| Job insecurity | 34.25 (20.09) | 33.88 (22.69) | 0.711 | |||
| Organizational injustice | 45.61 (17.39) | 46.20 (20.51) | 0.527 | |||
| Lack of reward | 45.24 (18.63) | 46.41 (20.86) | 0.214 | |||
| Discomfort in occupational climate | 32.52 (15.66) | 32.82 (17.64) | 0.708 | |||
*Some responses were omitted. †χ2 test or Student’s t-test