Table 3. Results of modeling the estimated effects of prenatal cocaine exposure in 18- to 20-year-old African Americans (n=350).

Estimated Effecta	Models Compared	Range of P for Variables Listed in Tables 1 and 2
Overall effect (one-way layout)	SR-/BE- = SR+/BE- = SR-/BE+ = SR+/BE+	.06 to .97
Factorial main effect (self-reported PCE)	(SR-/BE- + SR-/BE+) = (SR+BE+ + SR+/BE-)	.07 to .94
Factorial main effect (benzoylecgonine status)	(SR-/BE- + SR+/BE-) = (SR-/BE+ + SR+/BE+)	.02b to .99
Factorial interaction (synergy, BE x SR)	(SR-/BE- - SR-/BE+) = (SR+/BE- - SR+/BE+)	.07 to .96
Double-negative vs any positive	(SR-/BE-) = (SR+/BE- + SR-/BE+ + SR+/BE+)	.16 to .99
Extreme value (unconflicted)	(SR-/BE-) = (SR+/BE+)	.09 to .92

SR+/-, self-report positive/negative prenatal cocaine use; BE+/-, benzoylecgonine positive/negative prenatal presence.

a. All comparisons (including the extreme-value comparison) were conducted with full model denominator degrees of freedom (approximately 346).

b. Height (z), P=.02, P(Bonferroni) = .48; Height (cm), P=.02, P(Bonferroni) = .48 all others, P >.10.