Table I –
Baseline characteristics of the study groups according to the ulipristal acetate dose released by a copper intrauterine system
| Variables | 5 μg UPA/d N = 10 | 20 μg UPA/d N = 10 | 40 μg UPA/d N = 9 | P value |
|---|---|---|---|---|
|
| ||||
| Median (IQR) * | ||||
|
| ||||
| Age (years) | 34.0 (29.0–35.0) | 33.0 (27.0–35.0) | 31.0 (30.0–35.0) | 0.15 |
| BMI (Kg/m2) | 26.3 (21.3–28.1) | 24.8 (21.9–27.8) | 25.3 (23.7–26.5) | 0.10 |
| Schooling (years) | 9.0 (8.0–12.0) | 11.0 (7.0–14.0) | 11.0 (8.0–13.0) | 0.34 |
|
| ||||
| N (%) ** | ||||
|
| ||||
| Parity | 0.75 | |||
| 1–2 | 1 (10) | 2 (20) | 2 (22.2) | |
| ≥ 3 | 9 (90) | 8 (80) | 7 (77.8) | |
| Race | 0.39 | |||
| Black | 1 (10) | 0 | 0 | |
| White | 1 (10) | 0 | 0 | |
| Mixed | 8 (80) | 10 (100) | 9 (100) | |
| Ethnicity | 0.99 | |||
| Latina/Hispanic | 10 (100) | 10 (100) | 9 (100) | |
| Marital Status | 0.29 | |||
| Married/Cohabiting | 10 (100) | 8 (80) | 7 (77.8) | |
| Other1 | 0 | 2 (20) | 2 (22.2) | |
| Non-smokers | 10 (100) | 10 (100) | 9 (100) | 0.99 |
| Previous IUD use | 0 | 1 (10) | 0 | 0.37 |
| Usual volume of menstrual flow | 0.52 | |||
| Scanty (1–2 pads/day) | 2 (20) | 1 (10) | 2 (22.2) | |
| Moderate (3–4 pads/day) | 8 (80) | 8 (80) | 5 (55.6) | |
| Heavy (> 4 pads/day) | 0 | 1 (10) | 2 (22.2) | |
| Usual duration of menses | 0.43 | |||
| < 3 days | 3 (30) | 1 (10) | 3 (33.3) | |
| 4–7 days | 7 (70) | 9 (90) | 6 (66.7) | |
*
Kruskal-Wallis test
**
Chi-Square or Fisher’s exact test
IQR: interquartile range; UPA: ulipristal acetate; IUD: intrauterine device; BMI: body mass index
1
: Includes single, divorced and other.
Intention-to-treat population included the 29 randomized participants