Table 3.3.1. Socio-demographic, lifestyle and reproductive characteristics of subjects aged 15-19 years by contraceptive user group, at baseline.
| Characteristics | DMPA (n=115) |
NET-EN (n=115) |
COC (n=116) |
Non user controls (n=144) |
P value |
|---|---|---|---|---|---|
|
| |||||
| Mean age, years (SD) | 17.8 (1.4) | 17.4 (1.3) | 17.8 (1.0) | 17.4 (1.2) | 0.0002 |
| Mean highest education grade (SD) |
10.9 (1.5) | 10.5 (1.5) | 11.3(0.8) | 10.3 (1.4) | 0.0001 |
| Marital status, % | |||||
| Married/cohabiting | 5.3 | 5.2 | 10.3 | 12.8 | 0.0001 |
| Reg partner-not cohabiting | 92.1 | 83.8 | 87.1 | 63.5 | |
| Casual partner | 2.6 | 5.2 | 2.6 | 23.0 | |
| No partner | 0 | 0.9 | 0 | 0.7 | |
| Employment status % | |||||
| Employed full/part-time | 6.2 | 2.6 | 9.5 | 2.7 | <0.0001 |
| Unemployed | 11.4 | 10.5 | 8.5 | 7.4 | |
| Student/scholar | 82.5 | 86.8 | 79.1 | 98.8 | |
| Ethnicity % | |||||
| African | 94 | 89 | 57 | 92 | <0.0001 |
| Coloured | 5 | 7 | 21 | 4 | |
| Indian | 1 | 4 | 22 | 4 | |
| Ever pregnant % | 29.3 | 3 | 6 | 2 | <0.0001 |
| Ever lactated % | 16.7 | 0.9 | 2.6 | 1.4 | |
| Lactation (yrs) median | <1 | <1 | <1 | <1 | |
| Mean age at menarche, years(SD) | 13.9±1.3 | 13.8±1.2 | 13.6±1.48 | 13.5±1.29 | 0.19 |
| Exercise | |||||
| No regular exercise (%) | 78.1 | 72.8 | 64.9 | 77.7 | 0.0001 |
| At least once a week (%) | 21.9 | 27.2 | 35.1 | 22.3 | |
| Dieted in last 6 months (%) | 3.5 | 2.6 | 5.3 | 2.0 | 0.54 |
| Ever smoked cigarettes (%) | 9.6 | 11.3 | 27.3 | 4.8 | < 0.001 |
| Current smoker (%) | 6.0 | 7.0 | 13.9 | 3.4 | 0.006 |
DMPA= depot medroxyprogesterone acetate; NET-EN = Norethisterone enanthate; COC= combined oral contraceptive SD= standard deviation;