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Table 1 Demographic characteristics
| Number | 199 |
|---|---|
| Men/Women | 43/156 |
| Age (Median) year | 76.3 (IQR, 72.0–81.5) |
| Men | 74.9 (IQR, 67.8–81.0) |
| Women | 76.6 (IQR, 72.0–82.0) |
| BMI (Mean ± SD) (kg/m2) | 22.4 ± 3.0 (range, 15.4–32.1) |
| Men | 22.5 ± 3.0 |
| Women | 22.4 ± 3.0 |
| Education level (school) | |
| Elementary | 162 (81.5%) |
| Middle | 19 (9.5%) |
| High | 15 (7.5%) |
| University | 3 (1.5%) |
| Occupations | |
| Farmer | 159 (79.9%) |
| Housewife | 15 (7.5%) |
| Employee | 3 (1.5%) |
| Public officer | 1 (0.5%) |
| Business | 4 (2.0%) |
| No works | 16 (8.0%) |
| Housemates (number) | |
| 1 | 70 (35.2%) |
| 2 | 107 (53.8%) |
| 3–4 | 20 (10.1%) |
| More than 5 | 2 (0.9%) |
