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Table 2 Patients’ characteristics and clinical outcomes when CE was defined as ≥ 2 PCs in 10 HPFs

From: Histological diagnostic criterion for chronic endometritis based on the clinical outcome

  Non-CE CE P value
N = 34 N = 19
Age (y), Median, IQR 36 (32.5–37) 38 (35–39) 0.028
Gravidity, Median, IQR 0 (0–0.25) 0 (0–1) 0.13
Parity, Median, IQR 0 (0–1) 0 (0–1) 0.0023
BMI (kg/m2), Median, IQR 21.8 (19.6–24.1) 21.0 (20.1–25.9) 0.83
Smoking habit (%) 0 0 1
FSH (mIU/mL), Median, IQR 8.85 (7.4–9.7) 8.8 (7.4–10.3) 0.97
Previous OPU cycles, Median IQR 1.5 (1–4) 1 (1–2) 0.33
EM thickness (mm), Mean ± SD 10.5 ± 2.05 10.2 ± 1.95 0.55
Rate of good blastocysts (%) 61.2 (21/34) 63.1 (12/19) 0.99
Infertility cause
 Tubal factor 6 9 0.029
 Ovarian factor 5 3 1
 Endometriosis 8 5 1
 ASA 0 0 1
 Fertilization failure 1 1 1
 Male factor 11 2 0.10
 Unexplained fertility 11 3 0.33
Pregnancy rate (%) 58.8 (20/34) 26.3 (5/19) 0.043
Live birth rate (%) 44.1 (15/34) 5.3 (1/19) 0.0041
Miscarriage rate (%) 25 (5/20) 80 (4/5) 0.04
  1. CE chronic endometritis, PCs plasma cells, non-CE non chronic endometritis, HPF high-power field, SD standard deviation, IQR interquartile range, BMI body mass index, FSH follicle stimulate hormone, OPU ova pick up, EM endometrial, ASA anti-sperm antibody positive