Table 2 IUD displacement and associated risk factors
Median (IQR) or N (%) | Adequate IUD position (N = 684) | Non-adequate IUD position (N = 47) | Crude OR [95CI] | Adjusted* OR [95CI] (N = 709) |
|---|---|---|---|---|
Age (years) | 27 (25–29) | 27 (25-29.5) | 0.99 [0.92–1.06] | - |
BMI (kg/m2) | 21.3 (19.8–23.4) | 21.3 (19.9–23.7) | 1.06 [0.97–1.14] | 1.06 [0.96–1.16] |
NA | 6 | 0 | - | |
Nulliparity | 614 (89.8%) | 43 (91.5%) | 1.23 [0.48–4.16] | 2.14 [0.70–9.40] |
Never been pregnant | 556 (81.3%) | 39 (83%) | 1.12 [0.54–2.64] | - |
Surgical abortion within 6 weeks of IUD insertion | 26 (3.8%) | 0 (0%) | - | - |
History of IUD expulsion | 42 (6.1%) | 14 (29.8%) | 6.48 [3.15–12.86] | 6.57 [3.01–14.00] |
IUD type: | ||||
Copper | 516 (75.4%) | 44 (93.6%) | 4.78 [1.72–19.87] | 3.06 [1.00–13.29] |
Hormonal | 168 (24.6%) | 3 (6.4%) | ||
Time since IUD insertion (months) | 7,7 (2,6–23,6) | 7.3 (2,7–17) | 0.98 [0.96–1.01] | 0.97 [0.94–0.99] |
Dysmenorrhea since IUD insertion | 235 (34.5%) | 19 (40.4%) | 1.29 [0.69–2.34] | 1.27 [0.63–2.50] |
NA | 3 | 0 | ||
Heavy menstruations since IUD insertion | 248 (37%) | 22 (48.9%) | 1.63 [0.88–2.99] | 0.98 [0.49–1.95] |
NA | 14 | 2 | ||
Use of a MC since IUD insertion | 117 (17.1%) | 19 (40.4%) | 3.29 [1.75–6.05] | 3.13 [1.55–6.25] |