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Table 4 Patients’ characteristics and clinical outcomes when CE was defined as ≥ 5 PCs in 10 HPFs

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

  Non-CE CE P value
N = 42 N = 11
Age (y), Median, IQR 36 (33–37) 38 (37–39) 0.04
Gravidity, Median, IQR 0 (0–2) 0 (0–2) 0.15
Parity, Median, IQR 0 (0–1) 0 (0–2) 0.023
BMI (kg/m2), Median, IQR 21.8 (19.6–24.1) 20.9 (20.1–25.9) 0.90
Smoking habit (%) 0 0 1
FSH (mIU/mL), Median, IQR 8.7 (6.9–9.8) 9 (7.6–10.3) 0.42
Previous OPU cycles, Median IQR 1.5 (1–4) 1 (1–3) 0.46
EM thickness (mm), Mean ± SD 10.4 ± 2.0 10.2 ± 2.1 0.77
Rate of good blastocysts (%) 59.5 (25/42) 72.3 (8/11) 0.5
Infertility cause
 Tubal factor 11 4 0.71
 Ovarian factor 6 2 0.67
 Endometriosis 11 2 0.71
 ASA 0 0 1
 Fertilization failure 2 0 1
 Male factor 12 1 0.26
 Unexplained fertility 11 3 1
Pregnancy rate (%) 50 (15/42) 36.4 (4/11) 0.51
Live birth rate (%) 35.7 (15/42) 9.1 (1/11) 0.14
Miscarriage rate (%) 28.6 (6/21) 75 (3/4) 0.12
  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