Table 1.
Percentage of women continuing levonorgestrel IUD at 1 and 2 years by age and parity in the OS (modified from Abraham et al. 2015, [5])
| Age group and parity | n | Continuation rate year 1 (in %) | Continuation rate year 1 (95%-Confidence Interval) | Continuation rate year 2 (in %) | Continuation rate year 2 (95%-Confidence Interval) |
|---|---|---|---|---|---|
| > 25 parous | 1271 | 86 | (84; 87) | 76 | (74; 78) |
| > 25 nulliparous | 395 | 87 | (83; 90) | 77 | (72; 81) |
| 20–25 parous | 851 | 86 | (83; 88) | 73 | (73; 76) |
| 20–25 nulliparous | 850 | 87 | (85; 89) | 79 | (79; 82) |
| < 20 parous | 121 | 82 | (73; 88) | 73 | (63; 80) |
| < 20 nulliparous | 241 | 81 | (76; 86) | 67 | (61; 73) |