Table 1.
Demographic characteristics, fluoride intake, and Bayley-III outcomes for mother-child pairs
| All participants (n=103) | Boys (n=51) | Girls (n=52) | |||||
|---|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | Mean | SD | p value | |
| Maternal Characteristics | |||||||
| Age (years) | 27.5 | 5.7 | 27.7 | 5.9 | 27.2 | 5.6 | 0.66 |
| Education (years) | 12 | 2.8 | 12.1 | 2.8 | 11.9 | 2.8 | 0.77 |
| Socioeconomic Status** | |||||||
| Low | 46 (45) | 22(43) | 24 (46) | 0.09 | |||
| Middle | 47 (45) | 27(53) | 20 (39) | ||||
| High | 10 (10) | 2 (4) | 8 (15) | ||||
| Marital status** | |||||||
| Married | 83 (81) | 42 (82) | 41 (79) | 0.80 | |||
| Single | 20 (19) | 9 (18) | 11 (21) | ||||
| Child Characteristics | |||||||
| Delivery | |||||||
| Birth weight (Kg) | 3.1 | 0.4 | 3.1 | 0.4 | 3.0 | 0.3 | 0.14 |
| Z-score (birth weight/age) | −0.5 | 0.9 | −0.5 | 0.9 | −0.5 | 0.8 | 0.95 |
| Gestational age (weeks) | 38.1 | 1.9 | 37.8 | 2.1 | 38.3 | 1.6 | 0.15 |
| Breastfeeding (months) ** | |||||||
| Never/ < 1st month | 66 (64) | 35 (68) | 31 (60) | ||||
| Exclusive 1st month | 13 (12) | 6 (12) | 7 (13) | 0.18 | |||
| Non-exclusive up to 1 year | 11 (11) | 2 (4) | 9 (17) | ||||
| Exclusive up to 1 year | 13 (13) | 8 (16) | 5 (10) | ||||
| Bayley-III at 12 months of age (n=98) | |||||||
| Cognitive | 93.7 | 11.1 | 93.4 | 11.5 | 93.9 | 10.7 | 0.82 |
| Language | 81.2 | 10.9 | 78.5 | 11.0 | 83.6 | 10.3 | 0.02 |
| Motor | 87.8 | 10.5 | 86.9 | 11.0 | 88.7 | 10.0 | 0.39 |
| Bayley-III at 24 months of age (n=77) | |||||||
| Cognitive | 93.6 | 9.3 | 92.6 | 9.0 | 94.7 | 9.6 | 0.30 |
| Language | 92.2 | 9.3 | 89.2 | 8.4 | 95.3 | 9.2 | 0.003 |
| Motor | 93.6 | 9.3 | 92.2 | 9.5 | 95.1 | 9.1 | 0.18 |
*
p value for t-test or Fisher exact test
**
n (%)