Table 4.

Regression results stratified by age, sex, and race

Sex
	Male (n = 434)		Female (n = 195)
	β	ΔR2	β	ΔR2
Screening PGBI-10M	−0.03	0.03	<0.01	0.05
Baseline PGBI-10M	0.10a	0.09	0.12a	0.14
FMH biological parents	1.82a	0.05	0.13	<0.01
Parent Stress Survey	0.05	0.01	0.09a	0.03
Stressful Life Events Schedule	−0.02	<0.01	−0.01	<0.01
Age
	6–8 (n = 314)		9–12 (n = 315)
	β	ΔR2	β	ΔR2
Screening PGBI-10M	< 0.01	0.05	−0.03	0.03
Baseline PGBI-10M	0.10a	0.09	0.11a	0.11
FMH biological parents	1.40a	0.03	1.18a	0.02
Parent Stress Survey	0.05	0.01	0.07a	0.02
Stressful Life Events Schedule	−0.03	<0.01	−0.02	<0.01
Race/Ethnicity
	Whiteb (n = 395)		Other (n = 234)
	β	ΔR2	β	ΔR2
Screening PGBI-10M	−0.05	0.05	0.02	0.02
Baseline PGBI-10M	0.14a	0.16	0.04	0.02
FMH biological parents	1.51a	0.03	0.88	0.03
Parent Stress Survey	0.07a	0.01	0.05	0.01
Stressful Life Events Schedule	−0.02	<0.01	<0.01	<0.01

β = beta weight for variable in final model; ΔR² = change in variance accounted for at each step of the regression; PGBI-10M = Parent General Behavior Inventory 10-item Mania Scale; PHM = family history.

^aProbability of final model β p < 0.05.

^bWhite refers to Caucasian non-Hispanic individuals only.