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Table 5 Comparison of 4-month-old infant development according to maternal age group

From: Promoting factors of physical and mental development in early infancy: a comparison of preterm delivery/low birth weight infants and term infants

Development item (KIDS)

Maternal age

Teens (n = 2)a

20s (n = 106)b

30s (n = 165)c

40s (n = 10)d

p value

Post hoc

Motor score

11.0 [10–12]

10.0 [2–13]

10.0 [4–13]

10.5 [6–11]

0.752

 

Motor skills

10.5 [9–12]

11.0 [6–14]

10.0 [5–14]

11.5 [9–14]

0.444

 

Language comprehension

5.5 [5–6]

7.0 [1–8]

7.0 [2–8]

7.0 [4–8]

0.577

 

Verbalization

7.5 [7–8]

6.0 [3–8]

6.0 [2–8]

7.5 [5–8]

0.037

b and d*, c and d*

Sociability with adults

9.0 [6–12]

13.0 [8–17]

13.0 [6–18]

13.5 [10–19]

0.217

 

Diet

4.0 [4–6]

4.0 [2–7]

4.0 [0–7]

4.0 [2–7]

0.819

 
  1. * p < 0.05
  2. Data are presented as the median with the range in square brackets
  3. Maternal age
  4. aTeens
  5. b20s
  6. c30s
  7. d40s