Early life household intactness and timing of pubertal onset in girls: a prospective cohort study

BMC Pediatrics

Table 2 Association Between Household Intactness and Timing of Breast Development Onset: KPNC Puberty Study (2009–2020)

		Unadjusted				Adjusted^a				Adjusted^a,b
Household Intactness	N	TR	95%CI	HR	95%CI	TR	95%CI	HR	95%CI	TR	95%CI	HR	95%CI
Non-intact household before age 2 years	1,915	0.96	0.96,0.97	1.42	1.31,1.54	0.97	0.97,0.98	1.29	1.19,1.40	0.98	0.97,0.99	1.25	1.14,1.36
Non-intact household during age 2–6 years	2,070	0.98	0.98,0.99	1.17	1.08,1.26	0.99	0.98,1.00	1.13	1.04,1.22	0.99	0.98,1.00	1.08	1.00,1.17
Intact household	20,765	Ref		Ref		Ref		Ref		Ref		Ref

CI confidence interval; HR hazard ratio; KPNC Kaiser Permanente Northern California; TR time ratio
^aAdjusted for race/ethnicity and median household income
^bAdjusted for prepubertal BMI

ISSN: 1471-2431