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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 4.

Hierarchical Regression Analysis for Variables Predicting Observed Maternal Competence

Variable B SE B Beta p value
Step 1
    Infant birth weight −.000 .000 -.087 .33
    Maternal age at entry .012 .006 .177 .04
    Ongoing alcohol use .016 .069 .022 .81
    Ongoing marijuana use .017 .074 .021 .82
    Ongoing methadone use .128 .088 .129 .15
Step 2
    Group .025 .064 .034 .69
Step 3
    Rigidity score −.004 .002 −.198 <.05
Step 4
    Ongoing cocaine/heroin use −.136 .065 −.183 <.05
Step 5
    Group X ongoing cocaine/heroin use −.149 .131 −.338 .26

Note: Total R2 = 0.13, F(9, 121) = 2.07, p =.03. R2 =.06 for Step 1; R2 change = .001 for Step 2; R2 change = .04 for Step 3; R2 change = .04 for Step 4; R2 change = .01 for Step 5.