Page 34 - Sample Moderate prematurity, socioeconomic status,
and neurodevelopment in early childhood
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Chapter 3
Table 1 Characteristics of moderately preterm and term-born children
Preterm (n=916)
Term (n=543)
P value
Mean gestational age (weeks) Mean birth weight (grams)
Gestational age (weeks)
34.0 (SD 1.0) 2244 (SD 465)
% (n)
11.5 (105) 20.1 (184) 27.8 (255) 40.6 (372)
9.2 (84/916) 57.2 (524/916)
0.9 (7/768) 89.6 (688/768) 9.5 (73/768)
92.7 (845/912) 7.3 (67/912)
18.6 (170/916) 54.5 (499/916) 20.7 (190/916) 6.2 (57/916)
8.5 (75/885) 73.6 (651/885) 18.0 (159/885)
30.5 (278/912) 43.0 (392/912) 26.5 (242/912)
94.2 (856/909) 1.8 (16/909) 4.1 (37/909)
39.6 (SD 1.0) 3553 (SD 488)
% (n)
17.1 (93)
26.2 (142)
35.9 (195)
20.8 (113)
7.7 (42/543) 0.4 49.2 (267/543) 0.003
32 33 34 35
38 39 40 41
SGA*
Gender (male)
Age of child (months)†
< 43 43-47 > 47
Family composition
Two-parent family
One-parent family
Number of siblings
0
1
2 ≥3
Maternal age (years)
< 25 25-34 > 34
Maternal educational level‡ Low
Medium
High
Maternal ethnicity
Netherlands Europe
Outside of Europe
0.6 (3/467) 91.4 (427/467) 7.9 (37/467)
96.3 (517/537) 3.7 (20/537)
12.5 (68/543) 55.2 (300/543) 23.2 (126/543) 9.0 (49/543)
6.1 (32/526) 71.5 (376/526) 22.4 (118/526)
25.6 (138/539) 43.6 (235/539) 30.8 (166/539)
95.1 (507/533) 1.9 (10/533) 3.0 (16/533
0.6
0.005 0.006
0.05 0.08 0.6
*SGA, small for gestational age; i.e. birth weight below the
charts
† Age at completing the Child Behavior Checklist
‡ Low, primary school or less and/or low-level technical and vocational training; medium, high school or medium-level technical and vocational training for 12-16 years; high, university or high-level technical and vocational training for > 16 years
48
10th percentile of the Dutch Kloosterman growth
