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. 2022 Apr 21;42(10):1319–1327. doi: 10.1038/s41372-022-01391-9

Table 1.

Demographics of COVID-19 versus control mother-infant dyads.

Variable Mean (SD) or N (%)
Control
N = 28
Mean (SD) or N(%)
COVID-19
N = 31
P value
Maternal age at delivery (years) 29.8 (5.7) 29.7 (5.6) 0.96
Maternal Race 0.17
  Black 5 (17.9%) 2 (6.5%)
  White 5 (17.9%) 8 (25.8%)
  Asian 1 (3.6%) 2 (6.5%)
  Other 14 (50.0%) 19 (61.3%)
  Missing 3 (10.7%) 0 (0%)
Maternal Ethnicity = Hispanic 18 (64.3%) 23 (74.2%) 0.41
Maternal Primary Language = English 18 (64.3%) 14 (45.2%) 0.14
Health Insurance = Public 20 (71.4%) 24 (77.4%) 0.60
Chronic health conditions
  Any condition 17 (60.7%) 21 (67.7%) 0.57
  Diabetes 0 (0%) 0 (0%) N/A
  Hepatitis C 2 (7.1%) 0 (0%) 0.13
  Hypertension 2 (7.1%) 1 (3.2%) 0.49
  Obesity 4 (14.3%) 3 (9.7%) 0.58
  Thyroid condition 4 (14.3%) 1 (3.2%) 0.13
  Substance use disorder 2 (7.1%) 1 (3.2%) 0.49
  Other 15 (53.6%) 13 (41.9%) 0.37
Pregnancy co-morbidities
  Any co-morbidity 23 (82.1%) 29 (93.6%) 0.17
  Chorioamnionitis 0 (0%) 4 (12.9%) 0.05
  Gestational diabetes 6 (21.4%) 4 (12.9%) 0.38
  Preeclampsia/Gestational hypertension 10 (35.7%) 9 (29.0%) 0.58
  Intrauterine growth restriction 1 (3.6%) 7 (22.6%) 0.03
  Preterm labor 0 (0%) 2 (6.5%) 0.17
  Other 16 (57.1%) 21 (67.7%) 0.40
Nicotine smoking 2 (7.1%) 2 (6.5%) 0.31
Delivery mode = C-section 6 (21.4%) 9 (29.0%) 0.50
Gestational age at delivery (weeks) 39.1 (1.3) 39.3 (1.6) 0.50
Infant birth weight (g) 3349 (513.9) 3306 (547.4) 0.76
Infant sex = male 15 (53.6%) 16 (51.6%) 0.69
Breastfed infant 26 (92.9%) 30 (96.8%) 0.49
5 min APGAR score 8.8 (0.6) 8.9 (0.5) 0.32
Infant length of hospitalization (days) 3.5 (3.0) 3.1 (2.1) 0.59
Infant ER visit within 30 days 3 (11.1%) 1 (3.2%) 0.24
Infant re-hospitalization with 30 days 3 (11.1%) 1 (3.2%) 0.24
Infant diagnosed with SARS-CoV-2 within 30 days of delivery 0 (0%) 0 (0%) N/A
NICU admissiona 4 (14.3%) 4 (12.9%) 0.88
Mother diagnosed with SARS-CoV-2 within 30 days of delivery 0 (0%) N/A N/A
Trimester of COVID-19 infection N/A N/A
  First 3 (9.7%)
  Second 18 (58.1%)
  Third 10 (32.3%)
Gestational age at infection (weeks) N/A 24.0 (9.0) N/A
Maternal symptoms of COVID-19 at time of SARS-CoV-2 positive testing N/A 28 (90.3%) N/A
Maternal COVID-19 symptoms at delivery N/A N/A
Confirmed SARS-CoV-2 with active symptoms at delivery 1 (3.2%)
Confirmed SARS-CoV-2 and asymptomatic at delivery 4 (12.9%)

Recovered from SARS-CoV-2 infection earlier in pregnancy

(1st, 2nd, and 3rd Trimesters)

26 (83.9%)
Hospitalized for COVID-19 N/A 2 (6.6%) N/A

ER emergency room, SARS-CoV-2 Severe acute respiratory syndrome coronavirus 2.

aReasons for NICU admission were myelocystocele, apnea related to late prematurity, subgaleal hemorrhage, bradycardia, NAS, and TTN.