Table 2. Clinical and menstrual characteristics according to the stage of endometriosis.
| Characteristics | Endometriosis III (n=17) | Endometriosis IV (n=29) | P | |
|---|---|---|---|---|
| Age (yr) | 30.3 (28.2–32.5) | 30.6 (28.9–32.3) | NS | |
| Married | 5 (29) | 9 (31) | NS | |
| Parous | 3 (18) | 7 (24) | NS | |
| Body mass index (kg/m2) | 20.9 (19.5–22.3) | 20.8 (19.9–21.7) | NS | |
| Preoperative hemoglobin (g/dL) | 12.8 (12.3–13.3) | 12.6 (12.2–13.0) | NS | |
| Pain score | 3.8 (3.0–4.6) | 4.0 (3.4–4.7) | NS | |
| Menstrual amount by PBAC | 211 (156–267) | 167 (137–197) | NS | |
| PBAC score | NS | |||
| ≥100 | 13 (76) | 20 (69) | ||
| ≥130 | 11 (65) | 18 (62) | ||
| ≥160 | 9 (53) | 14 (48.3) | ||
| Menstrual duration (day) | 6.6 (6.0–7.1) | 6.1 (5.7–6.5) | NS | |
| Menstrual cycle | NS | |||
| Regular | 13 (76) | 27 (93.1) | ||
| Irregular | 4 (24) | 2 (6.9) | ||
| Cycle length in women with regular cycle (day) | 31.0 (29.4–32.6) | 28.6 (27.6–29.5) | NS | |
Values are presented as median (95% confidence interval) or number (%).
NS, not significant; PBAC, pictorial blood loss assessment chart.