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Table 1 Demographic and pregnancy characteristics of women included in the study

From: Automated prediction of early spontaneous miscarriage based on the analyzing ultrasonographic gestational sac imaging by the convolutional neural network: a case-control and cohort study

Parameter Retrospective study Prospective study
Live birth (n = 683) Miscarriage(n = 687) P Live birth (n = 95) Miscarriage (n = 6) P
Maternal age in yearsa 33.0(19–42) 32.0(23–45) 0.48 30.0(24–36) 32.0(25–39) 0.52
GA in weeksa 6(6–8) 6(6–8) 0.62 7(6–8) 7(6–7) 0.58
Graviditya 2.0(1–4) 3.0(1–6) 0.57 1.0(1–3) 2.0(1–4) 0.60
History of RPL (%)b 57(8.3) 36(5.2) 0.42 6(6.3) 0(0.0) 1.00
IVF or ICSI (%)b 178(26.1) 145(21.1) 0.38 13(13.7) 1(16.7) 1.00
GA at delivery or miscarriage (weeks)a 39 + 4(34 + 6 to 42 + 0) 9 + 3(7 + 0 to 16 + 2) NA 39 + 2(37 + 0 to 41 + 5) 10 + 3(8 + 5 to 15 + 6) NA
  1. GA gestational age, ICSI intracytoplasmic sperm injection, IVF in-vitro fertilization, NA not applicable, RPL recurrent pregnancy loss
  2. aData are given as median (range)
  3. bData are given as number (percent)