Table 2.

Interrupted time series analysis of $0 cost-sharing among LARC users, 2010–2013

Characteristic	Beta coefficient	P-value
Intercept	−1.07	<0.001
Overall change in trend by month	0.007	<0.001
After ACA change in level	0.65	<0.001
After ACA change in trend by month	0.004	<0.001
Age group
18–25 years	Reference
26–35 years	0.03	<0.001
36–45 years	0.01	0.004
Region
Northeast	Reference
Midwest	−0.12	<0.001
South	−0.28	<0.001
West	−0.07	<0.001
Unknown	−0.21	<0.001
Health plan type
Comprehensive	0.08	<0.001
Exclusive provider organization and health maintenance organization	0.26	<0.001
Point-of-Service	0.21	<0.001
Preferred-provider organization	Reference
Consumer-driven and high-deductible health plans	0.10	<0.001
Missing	0.27	<0.001

ACA=Affordable Care Act