Table 5. Univariate and multivariate analysis of factors associated with the emergency contraception use in a sample of higher education students, Santa Maria (RS).

Descriptors	Used EC	Univariate Analysis		Multivariate Analysis
	n (%)	OR (95%CI)	p	OR (95%CI)	p
Institution
Public HEId	579 (51.9%)	1	----	----	----
Private HEI	246 (55.3%)	1.15 (0.92–1.43)	0.2245
Age
18–20 years old	231 (49.4%)	1		1	----
21–24 years old	433 (55.7%)	1.29 (1.02–1.62)	0.0770	1.5 (1.18–1.9)	< 0.001
> 24 years old	161 (51.1%)	1.07 (0.81–1.43)		1.4 (1.04–1.9)	0.028
Course period
Initial	373 (51.1%)	1	0.1930	----	----
Final	452 (54.4%)	1.14 (0.94–1.39)
Monthly income (in minimum wages)
< 1	64 (52.0%)	1
1–3	288 (51.2%)	0.97 (0.65–1.43)
3–6	243 (53.2%)	1.05 (0.70–1.56)
6–9	113 (53.6%)	1.06 (0.68–1.66)	0.5733	----	----
9–12	58 (51.8%)	0.99 (0.59–1.65)
12–15	30 (63.8%)	1.63 (0.81–3.25)
> 15	27 (62.8%)	1.56 (0.76–3.17)
Skin color/race
White	698 (52.2%)	1
Black	39 (52.7%)	1.02 (0.64–1.63)
Brown	80 (59.7%)	1.36 (0.94–1.95)	0.5791	----	----
Indigenous	1 (50.0%)	0.92 (0.06–14.67)
Yellow	3 (75.0%)	2.75(0.28–26.47)
I do not know how to answer	4 (44.4%)	0.73 (0.20–2.74)
Religion
Catholic	391 (49.7%)	1
Protestant	69 (53.5%)	1.16 (0.80–1.69)
Spiritist	98 (56.3%)	1.31 (0.94–1.82)	0.0673	-----	-----
Umbanda/African	23 (65.7%)	1.94 (0.95–3.96)
Atheist	231 (57.0%)	1.34 (1.06–1.71)
Other	13 (43.3%)	0.77 (0.37–1.62)
Age of first sexual intercourse
< 16 years old	288 (68.6%)	1		1	< 0.001
16–18 years old	452 (50.6%)	0.47 (0.37–0.60)	< 0.0001	0.46 (0.36–0.59)	< 0.001
> 18 years old	85 (34.3%)	0.24 (0.17–0.33)		0.22 (0.15–0.3)
Used contraceptive method in the last sexual intercourse
Yes	744 (53.1%)	1	0.6112	----	----
No	81 (50.9%)	0.92 (0.66–1.28)
Partner
Long-term	621 (52.4%)	1	0.4905	----	----
Short-term	204 (54.4%)	1.09 (0.86–1.37)

EC: emergency contraception; OR: odds ratio; 95%CI: 95% confidence interval; HEI: higher education institution.