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. Author manuscript; available in PMC: 2020 Aug 1.

Published in final edited form as: J Adolesc Health. 2019 Apr 23;65(2):289–294. doi: 10.1016/j.jadohealth.2019.02.007

Table 2.

Characteristics associated with IPI among adolescent women with a last live birth, Colorado, 2004–2013

	Interpregnancy interval
	≤18 mo	>18 mo	p value
	(n = 10,799)	(n = 8,351)
Age at last live birth ≤16 (column %)	426 (4%)	385(5%)	.02
Age at last live birth > 16	9,522 (96%)	7,206 (95%)
White race (column %)	9,038 (84%)	6,896 (83%)	.02
Non-white race	1,741 (16%)	1,455 (17%)
Hispanic ethnicity (column %)	6,892 (64%)	4,573 (55%)	<.001
Non-Hispanic ethnicity	3,887 (36%)	3,778 (45%)
Last live birth (row %)			<.001
2004–2008 (13,070)	7,593 (58%)	5,477 (42%)
2009–2013 (6,060)	3,186(53%)	2,847 (47%)
Medicaid insurance (column %)	6,741 (63%)	6,061 (73%)	<.001
Non-Medicaid insurance	4,038 (37%)	2,290 (27%)