| Variable | Teenage group (No. 538) | Adult group (No. 609) |
| |||||
| Antenatal care | N | Total | % | N | Total | % | χ2 | p-value |
| 329 | 516* | 63.8 | 457 | 596** | 76.7 | 12.015 | 0.001 | |
| Low socioeconomic state (no.732) | Moderate socioeconomic state (no.412) |
| ||||||
| N | Total | % | N | Total | % | χ2 | p-value | |
| 413 | 704*** | 58.7 | 305 | 404**** | 75.5 | 31.144 | 0.000 | |