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Table 2 Demographics of randomized cohort (N = 109)

From: Improving infant sleep safety via electronic health record communication: a randomized controlled trial

  Intervention (N = 55) Control (N = 54)
Infant characteristics
Female Sex, N (%) 27 (49) 28 (52)
Gestational age in weeks, mean (SD) 39.4 (1.1) 39.4 (1.2)
Birth weight in kg, mean (SD) 3.38 (0.49) 3.37 (0.46)
Feeding Mode, N (%)
  Exclusive Breast 42 (76) 40 (74)
  Exclusive Formula 5 (9) 7 (13)
  Combination 8 (15) 7 (13)
Maternal characteristics
Mother’s age, Mean (SD) 28.9 (4.0) 29.4 (5.7)
Parity
  0 27 (49) 25 (46)
  ≥ 1 28 (51) 29 (54)
Smoke during pregnancy, N (%) 7 (13) 5 (9)
Mother’s Race, N (%)
  Black 4 (7) 4 (7)
  White 43 (78) 42 (78)
  Asian 4 (7) 6 (11)
  Other 4 (8) 2 (4)
Hispanic or Latino Ethnicity, N (%) 5 (9) 4 (7)
Married or Cohabitating, N (%) 50 (91) 45 (83)
Insurance, N (%)
  Private health insurance 45 (82) 42 (78)
  Medicaid 10 (18) 10 (19)
  Other 0 (0) 2 (4)
Education, N (%)
  High school graduate or less 12 (22) 11 (20)
  Some college or technical school 15 (27) 13 (24)
  Completed college 28 (51) 30 (56)
Plan to work outside the home in next 12 months, N (%)
  Yes 42 (76) 39 (72)
  No 10 (18) 10 (19)
  Unsure 3 (6) 5 (9)
Number of people living in household, Median (IQR) 2 (1–3) 2 (1–3)
Household income, N (%)
  < $50,000 15 (27) 12 (22)
  $50,000 to <$100,000 18 (33) 23 (43)
  ≥ $100,000 15 (27) 13 (24)
  Do not know or Refuse to Answer 7 (13) 6 (11)
Type of home, N (%)
  Single family 30 (55) 33 (61)
  Multi-family 2 (4) 0 (0)
  Apartment 9 (16) 9 (17)
  Townhome 10 (18) 10 (19)
  Mobile home or trailer 1 (2) 1 (2)
  Other 3 (6) 1 (2)