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. 2021 Sep 8;21:616. doi: 10.1186/s12884-021-04088-7

Table 3.

Socioeconomic factors associated with adolescent pregnancy

Adolescent mothers
Yes No
x̅ ± SD x̅ ± SD pa OR (95%CI)a pb OR (95%CI)b
Age at the first sexual intercourse (years) 15 ± 1.7 17 ± 3.4 <  0.001* 0.018* 0.9 (0.83–0.98)
Age at the first pregnancy (years) 16 ± 1.8 22 ± 5.2 <  0.001* < 0.001* 0.65 (0.6–0.69)
Age at the birth of the first child (years) 17 ± 1.8 22 ± 5.3 <  0.001* c
How many people live in the household? 4 ± 1.5 4 ± 1.3 < 0.001* < 0.001* 0.77 (0.68–0.87)
Family income (Reais) 962 ± 845.2 1134 ± 1047.3 0.001* 0.038* 1 (1–1)
n (%) n (%) pa OR (95%CI)a pb OR (95%CI)b
Ethnicity
 White 55 (12,6) 359 (18,9) 0,005* 0,75 (0,48-1,18) 0,521 0,96 (0,49-1,86)
 Brown 349 (80.4) 1385 (73.2) 1.24 (0.83–1.85) 1.17 (0.63–2.19)
 Black 30 (6.9) 148 (7.8) Ref.
Can read and write?
 Yes 432 (99) 1831 (96.4) 0.014* 2.59 (0.85–7.91) c
 No 1 (0.2) 34 (1.7) 0.32 (0.03–3.28)
 Can only sign their name 3 (0.6) 33 (1.7) Ref.
Marital status
 No partner 179 (41) 449 (23.6) < 0.001* 2.24 (1.8–2.8) < 0.001* 2.26 (1.67–3.07)
 With partner 257 (58.9) 1450 (76.3) Ref.
Religion
 Yes 386 (88.9) 1798 (94.6) < 0.001* 0.45 (0.32–0.64) 0.011* 0.48 (0.28–0.84)
 None 48 (11) 102 (5.3) Ref.
Region where you live
 Capital/MRF 190 (43.6) 762 (40) 0.173 1.15 (0.92–1.44)
 Countryside 246 (56.4) 1142 (60) Ref.
Has private health insurance?
 Yes, paid by the company 22 (5) 129 (6.7) 0.001* 0.69 (0.43–1.09) 1 1.01 (0.43–2.33)
 Yes, paid by the family 18 (4.1) 167 (8.7) 0.43 (0.27–0.7) 1 (0.55–1.8)
 No 395 (90.8) 1602 (84.4) Ref.
Food insecurity
 No 168 (42.6) 726 (42.4) 0.954 1 (0.81–1.23)
 Yes 226 (57.3) 983 (57.5) Ref.
Social class
 E 372 (87.1) 1407 (75.2) < 0.001* 2.23 (1.66–2.99) 0.348 1.22 (0.8–1.86)
 D, C, B and A 55 (12.8) 464 (24.7) Ref.

a – Unadjusted results. / b - Results adjusted for ethnicity, religion, marital status, social class, level of schooling, private health insurance, region where you live, number of people in the household, age at the first sexual intercourse, age at the first pregnancy, income and interviewer. / c - Not included in the final model due to multicollinearity.

MRF Metropolitan region of Fortaleza.