Study characteristics
| Variable (N=3609) | Median or N | IQR or % |
| Gender | ||
| Male | 1785 | 49.5% |
| Female | 1824 | 50.5% |
| Socioeconomic status* | ||
| Upper class (I) | 27 | 0.8% |
| Middle class (II & III) | 2355 | 67.3% |
| Lower class (IV & V) | 1118 | 31.9% |
| Occupation | ||
| Agricultural profession | 1919 | 63.8% |
| Non-agricultural profession | 1088 | 36.2% |
| Age (years) | 57 | 50.65 |
| Literacy† (years) | 5 | 0.9 |
| GDS | 2 | 1.6 |
| FRS | 12 | 9.16 |
*Assessed by Modified Kuppuswamy Scale
†Total years of completed formal education
FRS, Framingham Risk Scores; GDS, Geriatric Depression Scale.