Table 1.

Group Means and Standard Deviations for Cocaine-Exposed and Control Neonates on the Five Matching and Five Control Demographic Variables

VariableCocaine
(n = 25)
Controls
(n = 25)
Subject matching variables
 Gestational age (wk)37.3  (2.8)* 37.5  (2.7)
 Birth weight (g)2679  (636)2827  (597)
 Number of cigarettes smoked/day 13.7  (10.1)10.6  (8.8)
 SES ($1000 per year)16.2  (14.2)19.9  (17.5)
 Maternal weight gain (kg)12.1  (4.2)12.7  (4.0)
Control variables
 Corrected gestational age at testing
 (wk)
39.0  (2.5)38.1  (2.0)
 Weight at testing (g)2887  (577)2832  (489)
 Apgar at 5 min8.8  (0.6)9.1  (0.5)
 Mother's age (y)27.2  (4.3)27.0  (5.9)
 Number who received prenatal care14/2524/25
  • Abbreviation: SES, socioeconomic status as reflected by household income.

  • * Standard deviations are listed in parentheses beside each group mean.

  • Includes all participants with nonsmokers receiving a score of 0.

  • P < .001.