International Scholarly Research Notices / 2012 / Article / Tab 3

Clinical Study

Predisposing Individual Characteristics and Perinatal Outcomes of Women in the Tokyo Metropolitan Area Who Initiate Prenatal Care Late in Their Pregnancy: A Case-Control Study

Table 3

Pregnancy outcomes and neonatal characteristics in the study groups. The table indicates the number of women in each group and the data are presented as the mean ± standard deviation. The mean birth weight in the late-attender group was reduced compared to that in the control group ( 𝑃 = 0 . 0 3 ) . Babies born to the late attenders were found to have a higher incidence of admission to the NICU compared with babies born to the control group ( 𝑃 < 0 . 0 1 ) .


Late attenders ( 𝑛 = 1 2 1 ) Control group ( 𝑛 = 1 , 7 8 7 ) 𝑃 v a l u e

Gestational age at delivery (weeks), mean ± SD 3 8 . 9 ± 1 . 9 3 8 . 9 ± 1 . 6 0.93
Preterm birth8 (6.6%)105 (5.9%)0.69
Still birth1 (0.8%)7 (0.4%)0.40
Mode of delivery
 Spontaneous delivery 96 (79.3%)1412 (79.0%)1.00
 Forceps delivery8 (6.6%)89 (5.0%)0.39
 Cesarean section17 (14.1%)286 (16.0%)0.69
Birth weight (g), mean ± SD2,9 3 4 . 3 ± 3 8 3 . 9 3,01 9 . 3 ± 4 4 0 . 0 0.03
 Low birth weight (<2,500 g)11 (9.1%)154 (8.6%)0.86
 Macrosomia (≥4,000 g)1 (0.8%)24 (1.3%)1.00
Low Apgar score (<7) 1 min7 (5.8%)72 (4.0%)0.34
Low Apgar score (<7) 5 min1 (0.8%)17 (1.0%)1.00
Admission to neonatal intensive care unit23 (19.0%)149 (8.3%)<0.01

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