Table 1 Comparison of maternal and child characteristics between those included and not included in the present study, 2004 Pelotas Birth Cohort
Variables | Included (n=3347) | Not included (n=882) | p-value* |
|---|---|---|---|
Family income, lowest quintile(%) | 19.3 | 25.5 | < 0.001 |
Schooling (years), mean (sd) | 8.1 (3.4) | 7.8 (3.7) | 0.002** |
Maternal skin colour, white(%) | 73.3 | 72.0 | 0.930 |
Maternal age (years),mean (sd) | 26.2 (6.8) | 25.5 (6.5) | 0.118** |
Single mother(%) | 15.4 | 19.9 | 0.001 |
Parity≥ 2(%) | 33.5 | 37.2 | 0.079 |
Smoking during pregnancy(%) | 74.9 | 72.5 | 0.156 |
Alcohol during pregnancy(%) | 3.1 | 4.1 | 0.150 |
Started prenatal care in the 1sttrimester (%) | 73.9 | 68.8 | 0.011 |
Planned pregnancy(%) | 43.8 | 41.4 | 0.205 |
Mood symptoms during pregnancy(%) | 24.0 | 28.9 | 0.003 |
C-section(%) | 44.9 | 47.0 | 0.275 |
Child sex, male (%) | 51.4 | 53.5 | 0.282 |
Low birth weight(%) | 8.3 | 16.5 | < 0.001 |
Preterm birth < 37w(%) | 13.4 | 19.2 | < 0.001 |
5 min Apgar score< 7(%) | 1.3 | 5.2 | < 0.001 |