Table 2.
Multiple Linear Regression Analysis for the Association Between Sunlight Exposure and Mental Health
| Variables | β | 95% CI | p |
|---|---|---|---|
| Men | 0.838 | −0.796, 2.472 | 0.314 |
| Age | 0.063 | −0.156, 0.282 | 0.571 |
| BMI | 0.140 | −0.010, 0.291 | 0.068 |
| Ever married | −0.047 | −1.858, 1.764 | 0.959 |
| Academic degree (Ref.=Lower than bachelor) | −1.486 | −4.009, 1.036 | 0.248 |
| Religious beliefs | −2.054 | −5.651, 1.543 | 0.263 |
| Professional title (Ref.=Junior and below) | −0.087 | −1.678, 1.505 | 0.915 |
| Appointment way (Ref.=Other ways) | 0.459 | −0.883, 1.801 | 0.503 |
| Working years in department | −0.121 | −0.401, 0.159 | 0.395 |
| Working years in operating room | 0.082 | −0.169, 0.333 | 0.519 |
| Income/month (Ref.=5001–10,000) | |||
| <5000 | −0.415 | −2.204, 1.374 | 0.649 |
| 10,001–15,000 | −1.269 | −2.789, 0.251 | 0.102 |
| >15,000 | −0.304 | −2.180, 1.572 | 0.750 |
| Working days/week | 0.354 | −0.570, 1.279 | 0.452 |
| Job familiarity (Ref.=General and below) | |||
| Familiar | 0.041 | −2.233, 2.314 | 0.972 |
| Very familiar | −1.632 | −3.958, 0.693 | 0.169 |
| Sleep regularity | −3.341 | −4.515, −2.168 | <0.001 |
| Chronic disease | 3.514 | 2.087, 4.940 | <0.001 |
| Sunlight exposure hours/day | −0.378 | −0.749, −0.007 | 0.046 |
| Constant | 21.906 | 12.275, 31.537 | <0.001 |
| Adjust R2 =0.080 |
Abbreviations: BMI, body mass index; CI, confidence interval; Ref., reference.