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Table 2 Access to care, contraception, chlamydia trachomatis infection, history and type of voluntary pregnancy interruption (ToP) of undocumented pregnant migrants vs. pregnant women with legal residency status (control group) who had ToP at the Geneva University Hospitals, Switzerland between March 2005 and October 2006

From: Chlamydia trachomatis prevalence in undocumented migrants undergoing voluntary termination of pregnancy: a prospective cohort study

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)°°
  1. °Mean difference for continuous data (if value 0 included in CI95% then p > 0.05),
  2. °°Age-adjusted OR for categorical data (if value 1 included in CI95% then p > 0.05)