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. Author manuscript; available in PMC: 2010 Apr 21.
Published in final edited form as: Pediatrics. 2009 Dec 14;125(1):e83–e89. doi: 10.1542/peds.2009-0634

TABLE 4.

Hierarchical Multiple Regressions of Possible Mediation of Behavior by Cognitive Status

Parameter R2 β SE β β P sr2
Model 1a 0.132
 Age −.267 .166 −.156 .110 0.0230
 Gender 1.128 .700 .152 .110 0.0230
 Birth weight −.001 .0003 −.311 .002 0.0910
Model 2b 0.168
 Age .145 .812 .017 .859 0.0003
 Gender −6.107 3.419 −.165 .077 0.0260
 Birth weight .005 .001 .374 <.001 0.1310
Model 3c 0.255
 Age −.901 .451 −.181 .048 0.0300
 Gender 2.011 1.929 .093 .300 0.0080
 Birth weight −.003 .001 −.437 <.001 0.1540
 GAI −.065 .056 −.111 .248 0.0100

β indicates unstandardized β; β, standardized β; sr 2, squared semipartial correlation.

a

Outcome (parental total PBS); covariates (age and gender); predictor (birth weight).

b

Outcome (GAI); covariates (age and gender); predictor (birth weight).

c

Outcome (parental total PBS); covariates (age and gender); predictor (birth weight and GAI).