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Table 1 Demographic and clinical characteristics of the patients in the TOLAC success and failure groups

From: Outcomes and risk factors for failed trial of labor after cesarean delivery (TOLAC) in women with one previous cesarean section: a Chinese population-based study

Clinical parameters Success group (n = 606) Failure group (n = 114) P value
Maternal age (years), 31.21(17–40) 31.86(18–41) 0.769
BMI (kg/m2) 25.40 ± 3.51 25.63 ± 4.61 0.745
Gravidity, (times), 2 (0–9) 3 (0–9) 0.065
Parity, (times), 1 (0–3) 1 (0–3) 0.056
Number of abortions, (times), 1 (0–9) 2 (0–5) 0.643
History of vaginal delivery (no), n (%) 489 (80.69%) 105 (92.10%) 0.093
Gestational weeks at pregnancy termination, (weeks) 390/7(370/7–400/7) 395/7(386/7–401/7)  < 0.001
370/7–386/7 127(20.96%) 48(42.11%)  
 ≥ 390/7 479(78.22%) 66(57.89%)  
Induction of labor (yes), n (%) 176 (29.04%) 75 (65.79%)  < 0.001
Estimated birth weight (kg) 3.28 (2.84–3.50) 3.35 (3.14–3.66) 0.046
Time from previous CD (years) 6.01 (4.12–8.13) 6.33 (4.39–7.23) 0.642
Indication for the previous CD (failed trial of labor), n (%) 101 (16.80%) 24 (21.12%) 0.534
LUS thickness, mm 22 ± 11 17 ± 10  < 0.001
  1. Data in the table are presented as n (%), mean ± SD, and median [interquartile range]. CD Cesarean delivery, BMI Body mass index, LUS Lower uterine segment