TABLE 3

Select Characteristics of Term and Late-Preterm Newborns and Proportion With Morbidity During Birth Hospitalization: Massachusetts, 1998–2003

CharacteristicStudy Population, %aProportion With Newborn Morbidity, %b
Term (n = 377 638)Late Preterm (n = 26 170)Term (n = 11 371)Late Preterm (n = 5799)
Total100.0100.03.022.2
Gender
    Male51.054.33.423.1
    Female49.145.72.621.2
Maternal education (highest degree)
    Less than high school10.515.04.822.0
    High school25.227.73.622.7
    More than high school64.457.32.522.0
Maternal age, y
    <206.28.64.221.4
    20–2414.515.93.722.4
    25–2924.323.63.021.8
    30–3433.529.92.522.1
    35–3917.917.62.821.8
    40–443.54.03.326.7
    ≥450.10.33.827.8
Parity
    143.847.23.424.2
    234.830.42.519.6
    314.713.72.819.6
    ≥46.88.73.924.0
Maternal race/ethnicity
    Hispanic11.114.14.022.6
    Non-Hispanic white74.267.02.822.9
    Non-Hispanic black6.910.33.920.0
    Asian/Pacific Islander5.96.42.518.1
    Otherc1.92.33.518.6
Smoked during pregnancy
    Yes9.312.25.225.6
    No90.787.82.821.7
Payer at time of delivery
    Private73.265.72.421.7
    Public26.333.64.522.9
    Self-pay0.50.65.428.9
  • a Percentages may not add to 100.0 as a result of rounding.

  • b χ2 Pearson P < .05 for all categories except maternal education for late-preterm infants.

  • c Includes Alaskan Native and American Indian.