TABLE 1

Characteristics of the Study Population With Univariate Comparison of Infants Who Received Protocol-Driven Weans Compared With Those Who Did Not

Total, N = 547No Stringent Weaning Protocol, N = 130Stringent Weaning Protocol, N = 417PMissing or Unknown Values
Maternal characteristics
 Maternal age; y, mean ± SD26.7 ± 4.626.5 ± 4.526.8 ± 4.7.636
 Race and ethnicity.00258
  White, non-Hispanic91.6%83.8%94.1%
  Black, non-Hispanic5.3%8.5%4.3%
  Hispanic1.4%3.4%0.8%
  Other, non-Hispanic1.6%4.3%0.8%
 Married15.9%20.0%14.7%.1638
 Insurance.00245
  Public79.9%71.0%82.8%
  Private10.4%18.5%7.7%
  Self-pay9.8%10.5%9.5%
 Gravidity, mean ± SD3.4 ± 1.93.3 ± 1.83.4 ± 1.8.551
 Parity, living; mean ± SD2.4 ± 1.42.4 ± 1.32.4 ± 1.5.6725
 Prenatal care, ≥1 visit89.0%83.3%90.8%.02664
 Hepatitis C positive26.1%23.2%27.1%.3946
 Cesarean delivery33.4%32.3%33.8%.7623
Other maternal drug exposures
 SSRIs7.8%8.3%7.6%.8021
 Tobacco81.5%81.0%81.6%.8845
 Alcohol9.5%9.1%9.7%.86116
 Any nonopioid43.7%39.2%45.1%.24
Infant characteristics
 Gestational age; completed wk, mean ± SD38.3 ± 1.638.5 ± 1.638.3 ± 1.6.25
 Birth wt; kg, mean ± SD3.0 ± 0.53.0 ± 0.503.0 ± 0.48.90
 Length; cm, mean ± SD48.9 ± 3.049.0 ± 3.348.8 ± 2.8.549
 Head circumference; cm, mean ± SD33.4 ± 1.633.2 ± 1.733.5 ± 1.6.1811
 Infant gender, male52.8%56.2%51.2%.39
 1-minute Apgar; mean ± SD8.1 ± 1.48.1 ± 1.38.1 ± 1.4.9421
 5-minute Apgar; mean ± SD8.8 ± 0.88.8 ± 0.68.8 ± 0.8.6319
 Hour of life onset symptoms; mean ± SD, median46.1 ± 34.3, 38.048.9 ± 48.4, 35.045.3 ± 29.0, 40.0.4654
 Highest level of care setting.022
  1 (normal nursery) or39.9%48.5%37.2%
  2 (step-down, transitional nursery, special care)
  3 (NICU)60.1%51.5%62.8%
 Discharge disposition.712
  Home with mother63.7%61.5%64.3%
  Home with other family member16.7%20.0%15.7%
  Foster care or adoption18.2%16.9%18.6%
  Transfer to another facility1.5%1.5%1.4%
  • Percentage calculations all based on ratios of known values. SSRI, selective serotonin reuptake inhibitors.