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. 2019 Nov 25;35(1):e4. doi: 10.3346/jkms.2020.35.e4

Table 2. Sociodemographic and perinatal characteristics.

Variables FSIQ < 85 (n = 15) FSIQ ≥ 85 (n = 73) P value
Social factors
Maternal age, wk 33.0 ± 4.1 33.0 ± 3.3 0.978
Paternal age, wk 37.4 ± 4.6 35.1 ± 3.3 0.142
Maternal smoking 0 (0.0) 2/68 (2.9) 1.000
Mother's education level 0.136
Middle school 1/14 (7.1) 2/68 (2.9)
High school 9/14 (64.3) 27/68 (39.7)
College degree 4/14 (28.6) 39/68 (57.4)
Perinatal factors
GA, wk 29.5 ± 4.2 28.2 ± 3.4 0.249
Birth weight, g 1,029.3 ± 333.4 1,126.0 ± 282.5 0.370
Height, cm 49.8 ± 3.2 50.1 ± 2.9 0.871
Head circumference, cm 34.4 ± 1.8 34.6 ± 1.4 0.847
Male 8 (53.3) 36 (49.3) 1.000
Apgar score, 1 min 2.7 ± 2.1 2.7 ± 1.8 0.568
Apgar score, 5 min 5.2 ± 2.4 4.8 ± 1.9 0.514
PIH 2 (13.3) 7 (9.6) 0.647
GDM 0 (0.0) 4 (5.5) 1.000
C-sec 10 (66.7) 48 (65.8) 1.000
Histological chorioamnionitis 6 (40) 21 (28.8) 0.539
Prenatal steroid 10 (66.7) 38 (52.1) 0.397
IUGR 8 (53.3) 5 (6.8) < 0.001
WPPSI-IV
Vocabulary comprehension IQ 81.1 ± 14.5 96.7 ± 11.9 < 0.001
Visual spatial IQ 73.8 ± 15.4 105.6 ± 13.6 < 0.001
Working memory IQ 84.9 ± 21.9 102.0 ± 12.6 0.010
FSIQ 74.5 ± 13.1 100.6 ± 11.4 < 0.001
Cerebral palsy 2 (13.3) 1 (1.4) 0.736

Data are presented as mean ± standard deviation or number (%).

FSIQ = full scale intelligence quotient, GA = gestational age, PIH = pregnancy induced hypertension, GDM = gestational diabetes mellitus, IUGR = intrauterine growth retardation, WPPSI-IV = Wechsler Preschool and Primary Scale of Intelligence-IV, IQ = intelligence quotient.