. 2013 Aug 15;91(1):176–185. doi: 10.1007/s11524-013-9819-6

Table 2.

Association between familial structure, employed mother, girlfriends with some health-risk habits or behaviors and the development of unplanned pregnancy in adolescents

	Unplanned pregnancy in adolescents (n = 467)
	Yes/no	%	OR adjusted to p value (95 % CI)^a	Crude OR, p value (95 % CI)^a
Nonintact family^b	157/159	49.7	0.52 (0.39–0.71)*	0.50 (0.37–0.67)*
Intact family	310/159	66.1
Employed mother^b	255/132	65.9	1.76 (1.27–2.43)*	1.69 (1.27–2.26)*
No employed mother	212/186	53.3
Active smoking^b	99/39	71.7	1.70 (1.03–2.79)*	1.92 (1.28–2.87)*
No smoking^b	368/279	56.9
Girlfriends with some health-risk habits^b	459/304	60.2	2.84 (1.14–7.08)*	2.64 (1.09–6.37)*
Girlfriends without health-risk habits	8/14	36.4
Girlfriends who smoke^b	375/236	61.4	0.81 (0.52–1.26)**	1.41 (1.00–1.98)*
Girlfriends who do not smoke	92/82	52.9
Girlfriends who consume alcoholic beverages^b	423/270	61.0	1.71 (1.09–2.66)*	1.70 (1.10–2.64)*
Girlfriends who do not consume alcoholic beverages	44/48	47.8
Girlfriends with sexual activity^b	421/273	60.7	1.63 (1.02–2.61)*	1.50 (0.97–2.33)**
Girlfriends without sexual activity	46/45	50.5

CI confidence interval, OR odds ratio

*p < 0.05; **p > 0.05

^aAdjusted for low maternal educational level and low family income variables

^bReference category