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Table 1 Demographics and birth outcomes of study population (Dataset 1)

From: Nationwide population-based cohort study of adverse obstetric outcomes in pregnancies with myoma or following myomectomy: retrospective cohort study

  Group Aa
(N = 740,675)
Group Ba
(N = 38,402)
Group Ca
(N = 9890)
p-value
Age 31.62 ± 3.96 33.87 ± 3.50 34.63 ± 3.42 <.0001
Nulliparity 385,663 (52.07) 19,541 (50.89) 5380 (54.40) <.0001
Multiple pregnancy 12,495 (1.69) 1074 (2.80) 432 (4.37) <.0001
Cesarean section 286,946 (38.74) 17,547 (45.69) 8447 (85.41) <.0001
Preeclampsia 16,033 (2.16) 1063 (2.77) 327 (3.31) <.0001
PPH 72,501 (9.79) 3946 (10.28) 1007 (10.18) 0.0035
Placental abruption 2728 (0.37) 170 (0.44) 40 (0.40) 0.0572
Placenta previa 9365 (1.26) 848 (2.21) 289 (2.92) <.0001
Uterine rupture 107 (0.01) 12 (0.03) 22 (0.22) <.0001
  1. aGroup A, Women who had never been diagnosed with myoma; Group B, Women who had diagnosed myoma(s) but no history of myomectomy; Group C, Women who had a history of myomectomy
  2. PPH Postpartum hemorrhage
  3. Values are given as mean ± standard deviation or number (%)