Table 1. Demographic characteristics of cases and controls.
| Characteristics | Cases n (%) | Controls n (%) | P value | ||
| 1. Sex | 0.120 | ||||
| Male | 75 | (36.2) | 58 | (29.0) | |
| Female | 132 | (63.8) | 142 | (71.0) | |
| 2. Age | <0.001* | ||||
| ≤39 | 27 | (13.0) | 58 | (29.0) | |
| 40–60 | 100 | (48.3) | 101 | (50.5) | |
| >60 | 80 | (38.7) | 41 | (20.5) | |
| Mean (SD) | 56 | (14.3) | 48 | (14.3) | |
| 3. Nationality | 0.144 | ||||
| Thai | 196 | (94.7) | 195 | (97.5) | |
| other | 11 | (5.3) | 5 | (2.5) | |
| 4. Occupation | 0.060 | ||||
| salaried worker | 54 | (26.2) | 65 | (32.5) | |
| civil servant | 45 | (21.8) | 55 | (27.5) | |
| merchant | 27 | (13.1) | 27 | (13.5) | |
| other | 81 | (38.9) | 53 | (26.5) | |
| 5. Income (Thai baht/month) | 0.836 | ||||
| <5500 | 80 | (38.6) | 76 | (38.0) | |
| 5501–10 000 | 54 | (26.1) | 46 | (23.0) | |
| 10 001–20 000 | 34 | (16.4) | 42 | (21.0) | |
| 20 001–30 000 | 21 | (10.2) | 20 | (10.0) | |
| >30 000 | 14 | (6.8) | 13 | (6.5) | |
| 6. BMI | <0.001† | ||||
| ≤24.9 | 102 | (49.5) | 160 | (80.4) | |
| ≥25 | 104 | (50.5) | 39 | (19.6) | |
| Mean (SD) | 25.4 | (5.1) | 22.8 | (4.4) | |
*Pearson’s Chi-square.
†Mann–Whitney test.