Table 1. Characteristics of study women (N = 231).
| Characteristic | Number (%) |
|---|---|
| Age* | 31.6 (5.6) |
| Race | |
| Chinese | 170 (73.6) |
| Non-Chinese | 61 (26.4) |
| Education | |
| Below university | 81 (35.1) |
| University | 150 (64.9) |
| Occupation | |
| Executive | 35 (15.2) |
| Professional | 110 (47.6) |
| Technical support | 11 (4.8) |
| Sales | 6 (2.6) |
| Clerical/admin support | 18 (7.8) |
| Service | 17 (7.4) |
| Self-Employed | 7 (3.0) |
| Unemployed | 16 (6.9) |
| Others | 11 (4.8) |
| Medical history of depression and/or anxiety | |
| Yes | 10 (4) |
| No | 221 (96) |
| No of hours of sleep | |
| <6 hours | 55 (23.8) |
| > = 6 hours | 176 (76.2) |
| Shift work | |
| Yes | 57 (24.7) |
| No | 174 (75.3) |
| Coffee consumption | |
| > = 1 cup/day | 69 (29.9) |
| <1 cup/day | 162 (70.1) |
| Stress levels* | 5.3 (1.8) |
| Gave birth in last 5 years* | |
| Yes | 48 (20.8) |
| No | 183 (79.2) |
| Regular Exercise | |
| Yes | 65 (24.2) |
| No | 175 (75.8) |
| Smoking | |
| Yes | 12 (5.2) |
| No | 219 (94.8) |
| Alcohol consumption | |
| Never/Occasionally | 229 (99.1) |
| Once a week or more | 2 (0.9) |
* Mean (SD)