Table 2.

Changes in key emergency contraception (EC)-related metrics among ever EC users ages 15 to 44,^a and p values from logistic regression testing significant differences in these metrics between 2008 and 2015, National Survey of Family Growth

EC metric	2008	2015	p value
	%	%
Use of EC more than once
Among all sexually experienced women	4.4	10.4	<0.001
Among ever EC users	41.1	45.2	0.155
Receipt of EC counseling in year prior to survey
Among all sexually experienced women	3.5	3.2	0.393
Among ever EC users	15.5	6.9	<0.001
Reasons for EC use
Worried birth control would not work	45.0	41.3	0.179
Did not use birth control that time	48.8	50.2	0.596
Some other reason	12.1	15.2	0.062
Procurement of last EC
With a prescriptionb	30.8	18.4	<0.001
At a health care facility/clinicc	67.4	40.2	<0.001

EC, emergency contraception.

^aUnless otherwise noted; we present the first two EC metrics for both all sexually experienced US women and ever EC users.

^bOnly asked in years 3 and 4 of 2006 to 2010 NSFG cycle, n = 743.

^cOnly asked in years 2, 3, and 4 of 2006 to 2010 NSFG cycle, n = 1053.