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. Author manuscript; available in PMC: 2011 Jul 18.
Published in final edited form as: J Dev Behav Pediatr. 2002 Apr;23(2):87–94. doi: 10.1097/00004703-200204000-00004

Table 5.

Hierarchical Regression Analysis for Variables Predicting Observed Child Responsiveness

Variable B SE B Beta p value
Step 1
    Infant birth weight .000 .000 .022 .81
    Maternal age at entry −.001 .005 −.024 .79
    Ongoing alcohol use .041 .052 .076 .43
    Ongoing marijuana use .024 .056 .040 .67
    Ongoing methadone use .008 .067 .011 .91
Step 2
    Group .018 .049 .033 .71
Step 3
    Rigidity score −.002 .001 −.035 .71
Step 4
    Ongoing cocaine/heroin use −.034 .051 −.061 .51
Step 5
    Group X ongoing cocaine/heroin use −.077 .103 −.236 .46

Note: Total R2 = 0.019, F(9, 121) = 0.26, p =.98. R2 =.01 for Step 1; R2 change =.001 for Step 2; R2 change = .001 for Step 3; R2 change =.004 for Step 4; R2 change = .005 for Step 5.