Table 2.
Predictors for duration of sick leave (univariate analysis)
| Variables | Estimated mean days of sick leave | SE | 95% CI | χ2 | Degree of freedom | p | |
|---|---|---|---|---|---|---|---|
| Lower | Upper | ||||||
| Socio-demographic | |||||||
| Age at start of sick leave | |||||||
| 20–29 | 215.9 | 40.5 | 136.5 | 295.3 | 4.07 | 3 | 0.254 |
| 30–39 | 346.1 | 35.7 | 276.0 | 416.1 | |||
| 40–49 | 331.8 | 41.8 | 250.0 | 413.7 | |||
| ≧ 50 | 218.1 | 73.6 | 73.8 | 362.5 | |||
| Sex | |||||||
| Male | 318.6 | 26.9 | 265.9 | 371.3 | 0.33 | 1 | 0.564 |
| Female | 327.9 | 50.5 | 228.8 | 427.0 | |||
| Age at start of employment (years) | |||||||
| < 25 | 331.8 | 36.4 | 260.5 | 403.0 | 1.16 | 2 | 0.561 |
| 25–29 | 339.0 | 40.3 | 259.9 | 418.0 | |||
| ≧ 30 | 235.1 | 44.3 | 148.2 | 322.0 | |||
| Tenure (years) | |||||||
| < 5 | 240.6 | 50.8 | 141.0 | 340.2 | 4.12 | 3 | 0.249 |
| 5–9 | 289.6 | 61.9 | 168.2 | 410.9 | |||
| 10–19 | 322.4 | 35.2 | 253.4 | 391.5 | |||
| ≧ 20 | 371.6 | 46.2 | 281.1 | 462.1 | |||
| Clinical | |||||||
| Number of previous sick leave | |||||||
| 0 | 282.9 | 26.4 | 231.3 | 334.6 | 8.36 | 2 | 0.015 |
| 1–2 | 367.5 | 62.4 | 245.1 | 489.8 | |||
| ≧ 3 | 444.8 | 72.7 | 302.4 | 587.3 | |||
| Diagnosis | |||||||
| Major depressive disorder | 330.2 | 33.3 | 265.0 | 395.4 | 13.96 | 5 | 0.016 |
| Adjustment disorder | 237.8 | 40.9 | 157.7 | 317.9 | |||
| Bipolar disorder | 389.8 | 171.3 | 54.0 | 725.5 | |||
| Anxiety disorder | 506.2 | 145.1 | 221.8 | 790.6 | |||
| Schizophrenia | 586.9 | 130.0 | 332.0 | 841.7 | |||
| Others | 328.2 | 69.8 | 191.4 | 465.0 | |||
| Work related | |||||||
| Employee rank | |||||||
| Manager | 304.7 | 47.4 | 211.8 | 397.7 | 10.80 | 3 | 0.013 |
| Senior staff | 260.8 | 30.8 | 200.4 | 321.1 | |||
| Normal staff | 378.0 | 45.6 | 288.7 | 467.4 | |||
| Assistant staff | 663.3 | 123.4 | 421.4 | 905.1 | |||