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Table 3 Perinatal outcomes of COVID-19 patients who delivered during active infection and after recovery

From: Clinical characteristics of pregnant women with COVID-19 in Japan: a nationwide questionnaire survey

  During active infection (n = 12) After recovery (n = 14) P-valueb
Total Symptomatic patients (n = 9) Asymptomatic patients (n = 3) P-valuea
Timing of delivery
 Gestational age at delivery (weeks and days) 38w2d (37w1d-38w5d) 38w4d (36w5d-38w6d) 37w5d (37w2d-39w4d) 0.93 38w5d (37w5d-39w2d) 0.43
 Preterm birth 2 (16.7%) 2 (22.2%) 0 (0%)  > 0.99 1 (7.1%) 0.58
 Due to iatrogenic causes 2 (16.7%) 2 (22.2%) 0 (0%)  > 0.99 0 (0%) 0.20
Mode of deliveryd
 Spontaneous vaginal delivery 0 (0%) 0 (0%) 0 (0%)  > 0.99 5 (45.5%) 0.01
 Induction of labour 0 (0%) 0 (0%) 0 (0%)  > 0.99 3 (27.3%) 0.09
 Caesarean section 12 (100%) 9 (100%) 3 (100%)  > 0.99 3 (27.3%)  < 0.001
 Due to obstetrical indications 1 (8.3%) 1 (11.1%) 0 (0%)   3 (27.3%)  
 Due to concern about COVID-19 11 (91.7%) 8 (88.9%) 3 (100%)   0 (0%)  
Neonatal outcomee
 Apgar score < 7 at 1 min 0 (0%) 0 (0%) 0 (0%)  > 0.99 0 (0%)  > 0.99
 Apgar score < 7 at 5 min 0 (0%) 0 (0%) 0 (0%)  > 0.99 0 (0%)  > 0.99
 Birth weight (g) 3015 (2601–3109) 2950 (2549–3105) 3110 (2805–3109) 0.21 2907 (2377–3250) 0.53
 Performed SARS-CoV-2 test 11 (100%) 9 (100%) 2 (100%)c  > 0.99 0 (0%)  < 0.001
 Confirmed Positive 0 (0%) 0 (0%) 0 (0%)  > 0.99 - -
 Breastfeeding 1 (9.1%) 1 (11.1%) 0 (0%)c  > 0.99 10 (100%)  < 0.001
 Mother-Neonate Separation 12 (100%) 9 (100%) 3 (100%)  > 0.99 0 (0%)  < 0.001
  1. Data presented as n (%) or medians (interquartile ranges)
  2. SARS-CoV-2 severe acute respiratory syndrome coronavirus 2, COVID-19 coronavirus disease 2019
  3. aSymptomatic and asymptomatic patients who delivered during active infection were compared
  4. bPatients during active infection and after recovery were compared
  5. cData was not available for one patient as delivery had just occurred at the time of data collection
  6. dExcluding 3 cases with missing data of patients after recovery
  7. eExcluding 4 cases (3 cases for birthweight) with missing data of patients after recovery