Table 6 Risk factors for defective endometrial receptivity
|  | < 8 mm | ≥8 mm | p |
|---|---|---|---|
No. of ET cycles | 14 | 148 | Total n = 162 |
Previous PID | 2 (14.3%) | 6 (4.1%) | NS |
Previous ectopic pregnancy | 2 (14.3%) | 11 (7.4%) | NS |
Endometriosis | 1 (7.1%) | 14 (9.5%) | NS |
Previous uterine instrumentation / surgery | |||
 - Previous D&C | 0 (0%) | 0 (0%) | NS |
 - Previous myomectomy breaching endometrial cavity | 0 (0%) | 1 (0.7%) | NS |
Previous possible endometritis | |||
 - Previous multiple miscarriages | 0 (0%) | 0 (0%) | NS |
 - Previous uterine infection post-miscarriage | 0 (0%) | 0 (0%) | NS |