Table 1 Revised baseline characteristics of patients between EPO group and ioversol group
Parameters | EPO group (N = 165) | Ioversol group (N = 63) | P Value |
|---|---|---|---|
Age (years) | 31.36 ± 4.99 | 31.40 ± 4.64 | 0.960 |
BMI (kg/m2) | 22.79 ± 6.11 | 21.97 ± 4.07 | 0.319 |
History of smoke (n/%) | 14 (8.5) | 6 (9.5) | 0.804 |
Current smoker (n/%) | 3 (1.8) | 1 (1.6) | 0.905 |
History of sex life (years) | 7.0 (4.0–10.0) | 7.0 (4.0–10.5) | 0.763 |
Childbearing history | 0.519 | ||
None (n/%) | 106 (64.2) | 36 (57.1) | |
Once (n/%) | 44 (26.7) | 17 (27.0) | |
Twice (n/%) | 10 (6.1) | 6 (9.5) | |
≥ 3 times (n/%) | 5 (3.0) | 4 (6.4) | |
Times of abortion | 0.531 | ||
None (n/%) | 78 (47.3) | 30 (47.6) | |
Once (n/%) | 35 (21.2) | 18 (28.6) | |
Twice (n/%) | 29 (17.6) | 8 (12.7) | |
≥ 3 times (n/%) | 23 (13.9) | 7 (11.1) | |
The interval between last abortion and the present examination (months) | 46.0 (23.0–81.0) | 45.5 (12.0–63.3) | 0.291 |
The way of last abortion | 0.774 | ||
Accidental abortion (n/%) | 3 (1.8) | 3 (4.8) | |
Induced by drugs (n/%) | 19 (11.5) | 5 (7.9) | |
Artificial abortion (n/%) | 60 (36.4) | 22 (34.9) | |
Painless induced abortion (n/%) | 3 (1.8) | 2 (3.2) | |
Induced labour (n/%) | 2 (1.2) | 1 (1.6) | |
Duration of infertility (years) | 2.0 (1.0–4.0) | 2.0 (1.5–4.0) | 0.447 |
Spontaneous menstrual cycle (n/%) | 149 (90.3) | 59 (93.7) | 0.427 |
Regular menstrual cycle (n/%) | 140 (84.4) | 56 (88.9) | 0.432 |
Menstrual cycle (days) | 29.0 (28.0–31.0) | 30.0 (28.0–33.0) | 0.088 |
Sexual behavior in menstruation | 0.259 | ||
Never (n/%) | 140 (84.8) | 48 (76.2) | |
Occasional (n/%) | 20 (12.1) | 13 (20.6) | |
Often (n/%) | 5 (3.0) | 2 (3.2) | |
Bath in menstruation | 0.651 | ||
Never (n/%) | 135 (81.8) | 49 (77.8) | |
Occasional (n/%) | 26 (15.8) | 13 (20.6) | |
Often (n/%) | 4 (2.4) | 1 (1.6) | |
Endocrine disorder (n/%) | 12 (7.3) | 3 (4.8) | 0.700 |
Endometritis | 0.923 | ||
Yes (n/%) | 11 (6.7) | 4 (6.3) | |
No (n/%) | 150 (90.9) | 58 (92.1) | |
Unknown (n/%) | 4 (2.1) | 1 (1.6) | |
Previous chlamydia infection | 0.209 | ||
Yes (n/%) | 16 (9.7) | 3 (4.8) | |
No (n/%) | 145 (87.9) | 60 (95.2) | |
Unknown (n/%) | 4 (2.4) | 0 (0.0) | |
Pelvic inflammatory disease | 0.370 | ||
Yes (n/%) | 86 (52.1) | 33 (52.4) | |
No (n/%) | 74 (44.8) | 30 (47.6) | |
Unknown (n/%) | 5 (3.0) | 0 (0.0) | |
Coleitis | 0.258 | ||
Yes (n/%) | 87 (52.7) | 39 (61.9) | |
No (n/%) | 74 (44.8) | 24 (38.1) | |
Unknown (n/%) | 4 (2.4) | 0 (0.0) | |
Follicular estrogens | 0.009 | ||
Normal (n/%) | 135 (81.8) | 61 (96.8) | |
Abnormal (n/%) | 11 (6.7) | 2 (3.2) | |
Unknown (n/%) | 19 (11.5) | 0 (0.0) | |
Tuberculosis of uterus/tubal | 0.650 | ||
Yes (n/%) | 5 (3.0) | 1 (1.6) | |
No (n/%) | 159 (96.4) | 61 (96.8) | |
Unknown (n/%) | 1 (0.6) | 1 (1.6) | |
Previous surgery | 0.673 | ||
Hysteroscopy (n/%) | 12 (7.3) | 8 (12.7) | |
Laparoscope (n/%) | 12 (7.3) | 4 (6.3) | |
Cesarean section (n/%) | 12 (7.3) | 2 (3.2) | |
Tubal surgery (n/%) | 6 (3.6) | 2 (3.2) | |
Ectopic pregnancy surgery (n/%) | 6 (3.6) | 1 (1.6) | |
Others (n/%) | 30 (18.2) | 8 (12.7) |