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TABLE 1

Baseline Characteristics of Mother-Infant Pairs in the First 1000 Days Community Health Centers and Comparison Health Centers, by Intervention Assignment

Infant and Maternal CharacteristicsComparison SitesIntervention SitesP
Infant characteristics n = 650 n = 995 — 
 Sex, n (%)    
  Male 334 (51.4) 469 (47.1) .09 
  Female 316 (48.6) 526 (52.9) — 
 Race and/or ethnicity, n (%)    
  White, non-Hispanic 222 (34.2) 196 (19.7) <.001 
  Hispanic/Latino 340 (52.3) 597 (60.0) — 
  Black, non-Hispanic 33 (5.1) 60 (6.0) — 
  Asian or other 55 (8.5) 142 (14.3) — 
 Public insurance, n (%) 372 (57.2) 718 (72.2) <.001 
 Infant birth wt, kg, mean (SD) 3.2 (0.4) 3.4 (0.4) <.001 
 Gestational age, wk, mean (SD) 39.1 (1.2) 39.6 (1.1) <.001 
Maternal characteristics n = 535 n = 995 — 
 Age at delivery,a y, mean (SD) 30.3 (5.8) 29.7 (5.8) .04 
 Parity,a mean (SD) 1.9 (1.0) 2.1 (1.2) .001 
 Race and/or ethnicity, n (%)    
  White, non-Hispanic 103 (19.2) 241 (24.2) <.001 
  Hispanic/Latino 362 (67.7) 569 (57.2) — 
  Black, non-Hispanic 42 (7.9) 68 (6.9) — 
  Asian or other 28 (5.2) 117 (11.8) — 
 Public insurance,bn (%) 261 (49.3) 738 (74.2) <.001 
 Prepregnancy BMI,c mean (SD) 28.1 (9.1) 28.2 (6.1) .78 
Infant and Maternal CharacteristicsComparison SitesIntervention SitesP
Infant characteristics n = 650 n = 995 — 
 Sex, n (%)    
  Male 334 (51.4) 469 (47.1) .09 
  Female 316 (48.6) 526 (52.9) — 
 Race and/or ethnicity, n (%)    
  White, non-Hispanic 222 (34.2) 196 (19.7) <.001 
  Hispanic/Latino 340 (52.3) 597 (60.0) — 
  Black, non-Hispanic 33 (5.1) 60 (6.0) — 
  Asian or other 55 (8.5) 142 (14.3) — 
 Public insurance, n (%) 372 (57.2) 718 (72.2) <.001 
 Infant birth wt, kg, mean (SD) 3.2 (0.4) 3.4 (0.4) <.001 
 Gestational age, wk, mean (SD) 39.1 (1.2) 39.6 (1.1) <.001 
Maternal characteristics n = 535 n = 995 — 
 Age at delivery,a y, mean (SD) 30.3 (5.8) 29.7 (5.8) .04 
 Parity,a mean (SD) 1.9 (1.0) 2.1 (1.2) .001 
 Race and/or ethnicity, n (%)    
  White, non-Hispanic 103 (19.2) 241 (24.2) <.001 
  Hispanic/Latino 362 (67.7) 569 (57.2) — 
  Black, non-Hispanic 42 (7.9) 68 (6.9) — 
  Asian or other 28 (5.2) 117 (11.8) — 
 Public insurance,bn (%) 261 (49.3) 738 (74.2) <.001 
 Prepregnancy BMI,c mean (SD) 28.1 (9.1) 28.2 (6.1) .78 

—, not applicable.

a

N = 1528

b

N = 1525

c

N = 1504

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