Association between Prenatal One-Hour Glucose Challenge Test Values and Delivery Mode in Nondiabetic, Pregnant Black Women
Table 1
Study participant characteristics (), by delivery mode.
Maternal/delivery characteristics
Vaginal delivery (; 66.5%)
C-section delivery (; 33.5%)
Mean ± SD or (%)
Mean ± SD or (%)
Age at study visit (years)
25.9 ± 6.1
26.1 ± 5.6
0.825
Prepregnancy BMI (kg/m2)
27.2 ± 6.7
31.4 ± 7.3
Prepregnancy BMI category
Underweight
6 (5.7%)
1 (1.9%)
Normal weight
37 (35.2%)
12 (22.6%)
Overweight
35 (33.3%)
8 (15.1%)
Obese
27 (25.7%)
32 (60.4%)
Education (years)
12.8 ± 1.8
12.9 ± 1.4
0.888
Annual household income ($)a
31,676.5 ± 26,213.6
36,770.5 ± 36,069.5
0.351
Marital status
0.189
Married/living as married
21 (20.0%)
16 (30.2%)
Separated/divorced
3 (2.9%)
0 (0.0%)
Never married
81 (77.1%)
37 (69.8%)
Nulliparous
47 (44.8%)
29 (54.7%)
0.237
Smoked during pregnancy
9 (8.6%)
4 (7.5%)
0.545
Previous C-section
3 (2.9%)
15 (28.3%)
Labor induced/augmented
78 (76.5%)
28 (52.8%)
0.003
Previous GDM
1 (1.0%)
1 (1.9%)
0.560
Continuous mean 1-hour GCT value (mg/dL)
102.4 ± 21.5
107.8 ± 20.7
0.130
Gestational age at GCT (weeks)
25.9 ± 5.0
25.6 ± 6.9
0.802
Preeclampsia
5 (4.8%)
6 (11.3%)
0.126
Unplanned C-section
N/A
37 (69.8%)
N/A
Breech presentation
0 (0.0%)
2 (3.8%)
N/C
Birth weight (g)d
3195.7 ± 509.5
3109.5 ± 703.2
0.387
Birth weight -scoree
−0.49 ± 0.90
−0.50 ± 0.90
0.925
Low birth weightd
7 (6.9%)
7 (13.5%)
0.151
Infant male genderb
46 (43.8%)
29 (54.7%)
0.210
Gestational age at delivery (weeks)e
39.1 ± 1.8
38.7 ± 3.2
0.254
Preterm birthc
6 (5.7%)
6 (11.3%)
0.177
88 (vaginal delivery) and 46 (C-section) with complete information. b102 (vaginal delivery) and 52 (C-section) with complete information. c104 (vaginal delivery) with complete information. d101 (vaginal delivery) and 52 (C-section) with complete information. e101 (vaginal delivery) and 51 (C-section) with complete information. Statistically significant result (). N/C: not calculable due to empty cells.
