Table 3. Distribution of variables related to the use of emergency contraception.

Characteristics	n	%
Used emergency contraception (n = 1,561)
No	736	47.1
Yes	825	52.9
Used EC in the last 12 months (n = 825)
Not once	333	40.4
One time	304	36.8
Two or three times	155	18.8
Four times or more	33	4.0
Reason for use (n = 825)
Not using condoms	244	29.6
Condom breakage	193	23.4
Incorrect use of oral contraceptives	200	24.2
Uncertainty about the method used	221	26.8
I was not using any contraceptive method	106	12.8
Another reason	6	0.7
EC was administered how long after sexual intercourse (n = 824)a
Up to 24 hours	679	82.4
24–48 hours	113	13.7
48–72 hours	18	2.2
After 72 hours	4	0.5
I do not know how to answer	10	1.2
Location where EC was acquired (n = 824)a
Drugstore	823	99.9
UBSb	0	0.0
Other	1	0.1
EC was acquired with prescription (n = 824)a
No	806	97.8
Yes	18	2.2
Received guidance (n = 824)a
No	726	88.1
Yes	98	11.9
Showed an adverse reaction (n = 825)
I had no adverse reaction	541	65.6
Nausea	91	11.0
Change in the menstrual cycle	214	25.9
Bleeding	37	4.5
Vomiting	13	1.6
Headache	54	6.6
Other	5	0.6

EC: emergency contraception.

^a Missing data, i.e., individual did not respond.

^b UBS: Healthcare Unit.