Table 9.
Comparison of 4-month-old infant development according to family composition
| Development item (KIDS) | Family composition | p value | Siblings | p value | Post hoc | |||
|---|---|---|---|---|---|---|---|---|
| Nuclear family (n = 247) | Extended family (n = 38) | Nonea (n = 141) | <4 yearsb (n = 108) | ≥5 yearsc (n = 35) | ||||
| Motor score | 10.0 [2–13] | 10.0 [4–13] | 0.503 | 10.0 [2–13] | 10.0 [4–13] | 10.0 [6–13] | 0.656 | |
| Motor skills | 11.0 [5–14] | 10.0 [6–14] | 0.898 | 11.0 [6–14] | 10.0 [5–14] | 11.0 [7–14] | 0.001 | a and b***, b and c* |
| Language comprehension | 7.0 [1–8] | 6.0 [3–8] | 0.485 | 7.0 [1–8] | 7.0 [2–8] | 7.0 [3–8] | 0.187 | |
| Verbalization | 6.0 [2–8] | 7.0 [2–8] | 0.750 | 6.0 [3–8] | 6.0 [2–8] | 7.0 [4–8] | 0.001 | a and b**, b and c** |
| Sociability with adults | 13.0 [6–19] | 13.0 [6–17] | 0.341 | 13.0 [6–19] | 12.0 [6–19] | 13.0 [9–18] | 0.002 | a and b**, b and c** |
| Diet | 4.0 [0–7] | 4.0 [2–7] | 0.145 | 4.0 [0–7] | 4.0 [1–7] | 4.0 [2–7] | 0.671 | |
* p < 0.05, ** p < 0.01, *** p < 0.001
Data are presented as the median with the range in square brackets
Siblings
aNone (a child without a sibling)
b<4 years (sibling of 4 years or younger)
c≥5 years (sibling of 5 years and upward)