Table 1. General characteristics of study population.
| Variables | n | % |
|---|---|---|
| Sex | ||
| Male | 381 | 51.5 |
| Female | 359 | 48.5 |
| Age group | ||
| Up to 29 years | 201 | 27.2 |
| 30 to 39 years | 218 | 29.5 |
| 40 to 49 years | 183 | 24.7 |
| 50 years or more | 138 | 18.6 |
| Marital status | ||
| Single | 56 | 7.6 |
| Married/living with a partner | 638 | 86.2 |
| Divorced/separated/widowed | 46 | 6.2 |
| Race/color | ||
| White | 669 | 90.4 |
| Non-white | 71 | 9.6 |
| Socioeconomic class | ||
| A or B | 56 | 7.6 |
| C | 376 | 50.8 |
| D or E | 308 | 41.6 |
| Schooling | ||
| Less than 4 years | 501 | 67.7 |
| 4 to 8 years | 161 | 21.8 |
| More than 8 years | 78 | 10.5 |
n = 740.