Respiratory Distress Syndrome in Infants Delivered via Cesarean from Mothers with Preterm Premature Rupture of Membranes: A Propensity Score Analysis
Table 1
Baseline patient characteristics before and after propensity score matching.
Characteristic
Before matching
After matching
Cesarean delivery
Vaginal delivery
value
SMD
Cesarean delivery
Vaginal delivery
value
SMD
Patients,
101
89
51
51
Maternal age, years
33 [29, 36]
33 [29, 36]
0.904
0.465
33 [31, 36]
34 [30.5, 36]
0.806
2.468
Multiparous
63 (62.4)
38 (42.7)
0.009
40.198
26 (51)
27 (52.9)
1.000
3.925
Prepregnancy BMI, kg/m2
19.95 [18.74, 22.36]
21.11 [19.56, 23.80]
0.023
22.295
20.61 [18.85, 22.85]
20.96 [19.52, 23.74]
0.432
4.281
GA at PROM, weeks
29 [26, 31]
30 [28, 32]
0.001
48.997
30 [28, 32]
30 [27, 32]
0.938
4.545
GA at delivery, weeks
30 [27, 31]
32 [30, 32]
<0.001
61.823
30 [29, 32]
30 [28, 32]
0.981
1.546
Patients who received antenatal corticosteroid, , (%)
55 (54.5)
48 (53.9)
1
1.049
24 (47.1)
32 (62.7)
0.163
31.923
Antepartum CRP, mg/dL
1.29 [0.24, 3.00]
0.79 [0.31, 2.14]
0.426
25.252
1.02 [0.38, 2.19]
0.84 [0.21, 2.13]
0.359
8.867
Suspected abruptio placentae, (%)
20 (19.8)
1 (1.1)
<0.001
60.082
2 (3.9)
1 (2.0)
1.000
11.625
Neonatal birth weight, g
1319 [936, 1667]
1692 [1357, 1901]
<0.001
58.239
1523 [1182, 1897.5]
1521 [1199, 1792.5]
0.862
1.72
Neonatal male sex, (%)
55 (54.5)
50 (56.2)
0.884
3.469
30 (58.8)
27 (52.9)
0.690
11.868
Values are presented as numbers (%) or medians [interquartile range]. SMD: standardized mean difference; BMI: body mass index; GA: gestational age; PROM: premature rupture of membranes; CRP: C-reactive protein.
