Table 1.
Baseline sociodemographic andclinical characteristics of SA-NIDS study participants
| Number of participants | |
|---|---|
| Sex | |
| Male | 6292 (44·0%) |
| Female | 9338 (56·0%) |
| Race or ethnicity | |
| African | 12 272 (78·8%) |
| Coloured* | 2220 (8·2%) |
| Asian or Indian | 224 (2·4%) |
| White | 914 (10·6%) |
| Age category | |
| 15–19 years | 2725 (16·3%) |
| 20–24 years | 2062 (13·3%) |
| 25–29 years | 1573 (12·0%) |
| 30–34 years | 1363 (10·8%) |
| 35–64 years | 6342 (40·6%) |
| ≥65 years | 1547 (7·0%) |
| Marital status | |
| Married | 4365 (31·5%) |
| Living with partner | 1398 (9·2%) |
| Widow or widower | 1388 (6·9%) |
| Divorced or separated | 417 (3·3%) |
| Never married | 8002 (49·0%) |
| Education | |
| Less than high school | 2085 (8·7%) |
| Completed high school | 10 039 (61·7%) |
| Beyond high school | 3506 (29·6%) |
| Employment status | |
| Not employed | 2085 (56·8%) |
| Employed | 13 545 (43·2%) |
| Household income | |
| Lowest 20% | 3000 (17·5%) |
| Low and middle 20% | 3494 (17·9%) |
| Middle 20% | 3417 (19·0%) |
| Middle and high 20% | 3447 (22·6%) |
| Highest 20% | 2272 (23·1%) |
| Residence | |
| Rural | 8031 (37·7%) |
| Urban formal | 6662 (53·1%) |
| Urban informal | 937 (9·3%) |
| Asthma | |
| No | 14 965 (96·5%) |
| Yes | 561 (3·5%) |
| Tuberculosis | |
| No | 14 856 (96·4%) |
| Yes | 696 (3·6%) |
| Diabetes | |
| No | 14 920 (96·5%) |
| Yes | 607 (3·5%) |
| Depression | |
| No | 10 275 (78·3%) |
| Yes | 5288 (21·7%) |
SA-NIDS=South African National Income Dynamics Study.
*
The term “coloured” is used by Statistics South Africa,49 and is a South African ethnic label that includes children or descendants from Black-White, Black-Asian, Black-Coloured, and White-Asian unions.50 Percentages are adjusted on the basis of post-stratification weight to better match population estimates produced by Statistics South Africa.