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Table 1 Clinical characteristics of the training and validation cohorts

From: Prediction of vaginal birth after cesarean delivery in Southeast China: a retrospective cohort study

Characteristics

 

Whole cohort (n = 708)

Training cohorts(n = 483)

Validation cohorts(n = 225)

P*

Maternal height (mean (SD))

 

1.60 (0.05)

159.80 (4.87)

159.27 (5.00)

0.180

Pre-gravid maternal weight (mean (SD))

53.27 (7.19)

53.43 (7.43)

52.93 (6.64)

0.383

Maternal weight at delivery (mean (SD))

 

66.74 (7.84)

67.07 (8.03)

66.02 (7.37)

0.095

Pre-gravid maternal BMI (median [IQR])

 

20.62 [19.15, 22.42]

20.57 [19.07, 22.48]

20.78 [19.33, 22.06]

0.703

Maternal BMI at delivery (median [IQR])

 

26.16 [24.36, 27.88]

26.20 [24.34, 27.96]

26.02 [24.50, 27.50]

0.392

Abdominal circumference (mean (SD))

 

98.37 (5.05)

98.44 (5.23)

98.21 (4.62)

0.582

Fundal height (mean (SD))

 

33.87 (1.50)

33.91 (1.57)

33.78 (1.31)

0.253

Cervix Bishop score (median [IQR])

 

7.00 [7.00, 8.00]

7.00 [7.00, 8.00]

7.00 [7.00, 8.00]

0.909

Maternal age at delivery (mean (SD))

 

31.28 (3.64)

31.23 (3.58)

31.39 (3.78)

0.574

Gestation (median [IQR])

 

39.00 [38.29, 39.86]

1.00 [0.00, 1.00]

1.00 [0.00, 1.00]

0.334

Cesarean section interval time (median [IQR])

5.00 [3.00, 7.00]

5.00 [3.00, 6.50]

4.00 [3.00, 7.00]

0.942

History of vaginal delivery (%)

NO

473 (66.8)

319 (66.0)

154 (68.4)

0.585

 

YES

235 (33.2)

164 (34.0)

71 (31.6)

 

Rupture of membranes (%)

NO

473 (66.8)

332 (68.7)

141 (62.7)

0.131

 

YES

235 (33.2)

151 (31.3)

84 (37.3)

 

Success of TOLAC (%)

NO

122 (17.2)

86 (17.8)

36 (16.0)

0.627

 

YES

586 (82.8)

397 (82.2)

189 (84.0)

 
  1. *t test or χ2 test; Mann-Whitney U test was applied for Non-normally distributed data
  2. IQR interquartile range, BMI Body Mass Index, SD standard deviation