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. Author manuscript; available in PMC: 2008 Dec 12.
Published in final edited form as: Infant Behav Dev. 2005 Dec;28(4):431–444. doi: 10.1016/j.infbeh.2005.03.002
Regression model results:
Effect Beta (S.E.) d.f. F p
Intercept 0.583 (0.032)
Cocaine −0.025 (0.045) (1, 300) 0.31 0.5788
Time −0.382 (0.037) (1, 302) 106.28 <0.0001
Cocaine × Time 0.029 (0.052) (1, 304) 0.30 0.5847
Log (3rd trimester cigarette use) −0.022 (0.011) (1, 319) 4.25 0.0400