Table 1 Baseline characteristics
| Bipolar group (N = 83) | Balloon group (N = 43) |
|---|---|---|
Age (years) (mean, SD) | 42.6 (4.9) | 43.1 (3.8) |
Duration of menstruation (days) (mean, SD) | 7.7 (2.5) | 8.1 (2.2) |
Number of patients with clots (%) | 76 (92%) | 38 (88%) |
Duration of clots (days) (mean, SD) | 3.5 (2.0) | 3.3 (2.0) |
Pictorial chart (median, min, max) | 515 (150–3401) | 660 (188–3220) |
Dysmenorrhoea | ||
Moderate | 17 (21%) | 13 (30%) |
Severe | 34 (41%) | 16 (37%) |
Uterus | ||
Anteverted | 49 (60%) | 33 (77%) |
Midposition | 10 (12%) | 4 (9%) |
Retroverted | 13 (16%) | 4 (9%) |
Missing | 10 (12%) | 2 (5%) |
Haemoglobin (mmol/L) (mean, SD) | 8.0 (0.83) | 7.9 (0.90) |
FSH (IU/L) (mean, SD) | 6.5 (3.5) | 6.1 (4.3) |