Table 4 Factors associated with quality of life among medical students
| Â | Number | % | Physical QoL (SD) | p value | Mental QoL (SD) | p value |
|---|---|---|---|---|---|---|
Sex | Â | Â | Â | 0.59 | Â | 0.04 |
 Male | 476 | 46.9 | 90.3 (13.7) |  | 78.6 (13.1) |  |
 Female | 538 | 53.1 | 90.7 (10.6) |  | 80.2 (11.3) |  |
Year of medical school | Â | Â | Â | <0.01 | Â | <0.01 |
 2nd year | 241 | 23.8 | 87.5 (12.1) |  | 77.1 (12.8) |  |
 3rd year | 223 | 22.0 | 89.5 (14.0) |  | 79.1 (12.3) |  |
 4th year | 222 | 21.9 | 92.0 (11.4) |  | 79.5 (12.5) |  |
 5th year | 139 | 13.7 | 92.8 (11.1) |  | 83.4 (10.9) |  |
 6th year | 189 | 18.6 | 92.1 (10.6) |  | 79.8 (11.1) |  |
Parental occupation | Â | Â | Â | 0.57 | Â | 0.99 |
 None medical field | 918 | 90.5 | 90.5 (12.2) |  | 79.5 (12.2) |  |
 Medical field | 84 | 8.3 | 91.3 (9.5) |  | 79.5 (11.8) |  |
 Missing | 12 | 1.2 | – |  | – |  |
Household income | Â | Â | Â | 0.09 | Â | 0.71 |
 <30,000 | 226 | 22.3 | 90.6 (12.2) |  | 78.7 (12.9) |  |
 30,000–60,000 | 351 | 34.6 | 89.2 (13.3) |  | 79.6 (11.1) |  |
 60,000–90,000 | 200 | 19.7 | 91.2 (10.8) |  | 79.5 (11.5) |  |
 >90,000 | 213 | 21.0 | 91.7 (11.4) |  | 80.0 (14.0) |  |
 Missing | 24 | 2.4 | – |  | – |  |
Personal expense | Â | Â | Â | 0.43 | Â | 0.31 |
 <3000 | 209 | 20.6 | 89.5 (12.3) |  | 78.9 (12.9) |  |
 3000–6000 | 524 | 51.7 | 91.0 (11.5) |  | 79.8 (11.4) |  |
 6000–9000 | 152 | 15.0 | 90.6 (12.6) |  | 80.1 (13.1) |  |
 >9000 | 120 | 11.8 | 89.7 (14.4) |  | 77.7 (13.2) |  |
 Missing | 9 | 0.9 | – |  |  |  |
Residence | Â | Â | Â | 0.71 | Â | 0.51 |
 Chiang Mai | 290 | 28.6 | 90.7 (11.7) |  | 79.8 (12.2) |  |
 Outside Chiang Mai | 724 | 71.4 | 90.4 (12.3) |  | 79.3 (12.2) |  |
Grade point average (GPA) | Â | Â | Â | 0.18 | Â | 0.71 |
 <3.0 | 336 | 33.1 | 89.7 (14.3) |  | 79.6 (12.6) |  |
 3.0–3.5 | 343 | 33.8 | 91.4 (11.0) |  | 79.7 (11.9) |  |
 >3.5 | 335 | 33.0 | 90.4 (10.9) |  | 79.0 (12.1) |  |
Body mass index (BMI) | Â | Â | Â | 0.43 | Â | 0.51 |
 Underweight: <18 kg/m2 | 96 | 9.5 | 89.5 (13.4) |  | 79.6 (12.2) |  |
 Normal: 18–25 kg/m2 | 721 | 71.1 | 91.1 (11.2) |  | 79.6 (12.1) |  |
 Obese: ≥25 kg/m2 | 86 | 8.5 | 90.9 (10.7) |  | 81.2 (10.8) |  |
 Missing | 111 | 10.9 |  |  |  |  |
Self report underlying disease | Â | Â | Â | <0.01 | Â | 0.04 |
 No | 828 | 81.7 | 91.3 (11.2) |  | 79.8 (12.0) |  |
 Yes | 186 | 18.3 | 87.0 (15.2) |  | 77.8 (13.0) |  |
Depression | Â | Â | Â | <0.01 | Â | <0.01 |
 No | 912 | 89.9 | 91.7 (10.6) |  | 81.1 (10.3) |  |
 Mild | 85 | 8.4 | 81.5 (18.3) |  | 68.2 (14.8) |  |
 Moderate to severe | 15 | 1.5 | 71.4 (19.4) |  | 43.9 (11.6) |  |
 Missing | 2 | 0.2 | – |  | – |  |