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Table 4 Linear regression model results showing differences due to WIC interactions for birth weight in grams and maternal characteristics before and during the Great Recession

From: The effect of women, infant, and children (WIC) services on birth weight before and during the 2007–2009 great recession in Washington state and Florida: a pooled cross-sectional time series analysis

 

Baseline

Recession

Coef. (95% CI)

Coef. (95% CI)

Maternal WIC

 Not Enrolled

Referent

Referent

 Enrolled

3..0 (− 34.3, 40.2)

−17.5 (− 54.4, 19.3)

Maternal Race/Ethnicity

 White, Non-Hispanic

Referent

Referent

 White, Hispanic

− 77.2 (− 103.8, − 50.6)

−76.5 (− 109.5, − 43.4)

 Black, Non-Hispanic

−250.5 (− 276.1, − 224.9)

−255.2 (− 285.1, − 225.3)

 Asian

−186.6 (− 216.3, − 152.8)

−208.1 (− 248.6, − 167.7)

 Other

−38.6 (− 66.0, − 11.1)

−32.2 (− 62.4, − 1.9)

WIC x Maternal Race/Ethnicitya

 White x WIC

Referent

Referent

 Hispanic x WIC

14.0 (− 18.0, 45.9)

27.5 (−4.5, 59.6)

 Black x WIC

53.5 (32.4, 74.5)

58.03 (27.77, 88.30)

 Asian x WIC

−3.4 (−43.6, 36.8)

44.7 (−4.6, 94.0)

 Other x WIC

37.2 (18.9, 55.5)

38.5 (11.6, 65.3)

Maternal Age (in years)

 Age ≤ 14

−246.9 (− 376.2, − 117.7)

−54.4 (− 196.2, 87.4)

 Age 15–19

− 28.9 (− 74.8, 17.1)

−24.4 (− 77.8, 23.1)

 Age 20–24

28.7 (5.7, 51.6)

22.0 (−1.7, 45.6)

 Age 25–29

32.1 (13.4, 50.7)

37.5 (7.8, 67.2)

 Age 30–34

Referent

Referent

 Age 35–39

− 50.8 (− 86.8, − 14.8)

− 45.5 (− 107.6, 16.6)

 Age 40 +

− 169.7 (− 250.6, −  89.7)

−118.2 (− 179.7, − 56.7)

WIC x Maternal Age (in years)

 Age ≤ 14 x WIC

195.6 (81.1, 310.0)

7.7 (− 159.0, 174.4)

 Age 15–19 x WIC

34.7(− 13.6, 83.0)

35.5 (−27.8, 98.8)

 Age 20–24 x WIC

− 3.0 (− 31.9, 26.0)

5.3 (− 24.1, 34.6)

 Age 25–29 x WIC

− 9.8 (− 34.2, 14.6)

−14.5 (− 57.8, 28.8)

 Age 30–34 x WIC

Referent

Referent

 Age 35–39 x WIC

− 34.8 (− 77.8, 8.2)

3.1 (− 74.6, 80.7)

 Age 40 + x WIC

33.4 (− 50.6, 117.4)

− 10.9 (− 110.2, 88.3)

Maternal Education

 Less than H.S.

− 78.0 (− 115.0, − 41.1)

−86.6 (− 127.5, − 45.6)

 H.S. Diploma

− 39.6 (− 58.3, − 20.8)

− 55.8 (− 77.4, − 34.3)

 Some College

Referent

Referent

 Not Assessed;

maternal age < 20 years

− 39.9 (− 67.8, − 12.1)

−44.6 (− 75.7, − 13.6)

WIC x Maternal Education

 Less than H.S. x WIC

22.9 (−11.3, 57.0)

27.40 (− 12.76, 67.56)

 H.S. Diploma x WIC

10.5 (−  7.7, 28.7)

26.02(− 1.69, 53.74)

 Some College x WIC

Referent

Referent

 Not Assessed;

maternal age < 20 years x WIC

− 1.0 (− 34.8, 32.9)

16.9 (−20.3, 54.0)

Timing of Prenatal Care Entry

 During First Trimester

Referent

Referent

 After First Trimester (including no prenatal care)

− 30.0 (− 5.1, − 15.0)

−39.6 (− 59.0, − 20.2)

WIC x Prenatal Care

 First Trimester x WIC

Referent

Referent

 Late x WIC

37.0 (21.3, 52.6)

48.9 (26.5, 71.3)

  1. Abbreviations: CI: Confidence Interval; H.S.: high school; WIC: Special Supplemental Nutrition Program for Women, Infants, and Children
  2. a “x” represents interaction between variable (e.g. maternal race/ethnicity) and WIC