Table 2.
Characteristic or measurement |
Undocumented migrants (n = 175) |
Missing n(%) |
Control group (n = 208) |
Missing n(%) |
Mean difference (CI95%)° or OR (CI95%)°° |
Gravidity (SD) | 2.8 (1.6) | 1 (0.6) | 2.4 (1.4) | 6 (2.9) | 0.4 (0.1;0.7)° |
Parity (SD) | 1.2 (1.2) | 0 | 0.8 (0.9) | 0 | 0.4 (0.2;0.6)° |
Weeks of pregnancy at first contact with a health professional (SD) | 8.0 (2.6) | 0 | 6.9 (2.1) | 0 | 1.2 (0.7;1.6)° |
Delayed first contact with a health professional | |||||
(>10 weeks of amenorrhea) | 14.9% | 0 | 5.8% | 0 | 2.9 (1.4;5.8)°° |
(>12 weeks of amenorrhea) | 4.0% | 0 | 1.4% | 0 | 2.9 (0.7;11.7)°° |
Chlamydia trachomatis infection: (CTI) | 12.8% | 3 (1.7) | 4.4% | 2 (1.0) | 3.2 (1.4;7.3)°° |
CTI by type of contraception: | |||||
Condom use | 7.0% | 3 (1.7) | 3.8% | 2 (1.0) | 1.9 (0.4;9.0)°° |
Other means of contraception | 15.7% | 3 (1.7) | 4.8% | 2 (1.0) | 3.7 (1.4;9.7)°° |
Contraception the month of conception: | |||||
No contraception | 23.4% | 0 | 14.9 | 0 | 1.8 (1.04;2.9)°° |
Insecure contraception (of those with contraception) | 83.6% | 0 | 75.7% | 0 | 1.6 (0.9;2.9)°° |
Condom | 42.5% | 0 | 46.3% | 0 | 1.4 (0.9;2.1)°° |
Calendar (Ogino) | 29.9% | 0 | 17.0% | 0 | 2.2 (1.3;3.8)°° |
Withdrawal | 11.2% | 0 | 12.4% | 0 | 1.1 (0.6;2.3)°° |
Secure contraception (of those with contraception): | |||||
Pill | 12.7% | 0 | 21.5% | 0 | 2.1 (1.1;3.8)°° |
Others | 3.7% | 0 | 2.8% | 0 | 1.6 (0.4;5.8)°° |
°Mean difference for continuous data (if value 0 included in CI95% then p > 0.05),
°°Age-adjusted OR for categorical data (if value 1 included in CI95% then p > 0.05)