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The characteristic of the sample.
| Item | N | % | |
|---|---|---|---|
| Number of participants | 360 | 100 | |
| Age | Average | 30.5 y | |
| Median | 31 y | ||
| Education | Basic | 69 | 19.1 |
| High school | 145 | 40.3 | |
| University | 146 | 40.6 | |
| Residence | Town | 259 | 71.9 |
| Village | 101 | 28.1 | |
| Parity | Primipara | 178 | 49.4 |
| Secundipara | 146 | 40.6 | |
| Multipara | 36 | 10.0 | |
| Smoking | Never | 230 | 63.6 |
| Former | 109 | 30.0 | |
| Current | 22 | 6.1 | |
| Alcohol in pregnancy (occasionally) | 112 | 31.1 | |
| Illicit drugs | Never | 299 | 83.0 |
| Former | 32 | 8.9 | |
| Current | 29 | 8.1 | |
