Table 1. Baseline Characteristics of subjects by contraceptive user group.
| Characteristics |
nonusers (n=59) |
Injectable Users (n=72) |
COC users (n=24) |
discontinuers (n=50) |
P value |
|---|---|---|---|---|---|
|
| |||||
| Mean age, years (SD) | 17.1 (1.4) | 17.5 (1.3) | 17.7 (1.2) | 17.5 (1.2) | 0.17 |
| Mean highest education grade (SD) | 9.7 (1.4) | 10.4 (1.5) | 10.9 (1.3) | 10.7 (1.3) | <0.001 |
| Occupation | 0.08 | ||||
| Employed | 0 | 0 | 4.4 | 5.9 | |
| Unemployed | 5.4 | 7.8 | 13.1 | 7.8 | |
| Student/scholar | 94.6 | 92.2 | 82.6 | 86.3 | |
| Ethnicity % | 0.02 | ||||
| African | 97.5 | 96.2 | 81.3 | 93.8 | |
| Coloured | 0 | 2.8 | 6.3 | 3.1 | |
| Indian | 2.5 | 0.9 | 12.5 | 3.1 | |
| Ever pregnant % | 1.7 | 11.1 | 12.5 | 14.0 | 0.32 |
| Mean age at menarche, years(SD) | 13.4 (1.2) | 13.6 (1.3) | 13.4 (1.5) | 14.0 (1.4) | 0.09 |
| Exercise at least once a week (%) | 28.6 | 15.7 | 13.0 | 20.5 | 0.28 |
| Current smoker | 1.7 | 2.7 | 12.5 | 6.0 | 0.1 |
| Weight kg (SD) | 58.9 (10.9) | 59.4 (11.9) | 57.5 (12.3) | 62.2 (9.8) | 0.29 |
| Height cm (sd) | 155.6 (6.0) | 155.8 (5.5) | 156.6 (5.5) | 156.5 (5.9) | 0.8 |
| BMI kg/m2 (SD) | 24.4 (4.4) | 24.5 (4.3) | 23.5 (4.5) | 25.5 (3.8) | 0.24 |
| Overweight/obese% | 42.4 | 38.4 | 29.2 | 50.0 | 0.35 |
BMI = body mass index
Non-obese: BMI <25.0
Overweight: BMI 25-29.9
Obese: BMI ≥30.0