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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 0.473 (0.025)
Cocaine −0.019 (0.035) (1, 279) 0.30 0.5842
Time −0.412 (0.029) (1, 296) 204.03 <0.0001
Cocaine × Time 0.042 (0.041) (1, 299) 1.06 0.3049
Log (3rd trimester marijuana use) −0.053 (0.023) (1, 326) 5.30 0.0220