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Table 2 Baseline Characteristics of those whose treatment was changed due to pre-transfer surveillance labs versus those where labs were measured but treatment was not changed

From: Measuring serum estradiol and progesterone one day prior to frozen embryo transfer improves live birth rates

 Patients with change in hormones (N = 175)Patients without change in hormones (N = 349)p-value
Mean Age (years)34.2 (+ 4.8)34.8 (+ 4.1)0.2
Mean BMI (kg/m2)26.8 (+ 5.8)23.6 (+ 4.8)< 0.001
Endometrial stripe (mm)10 (+ 2.4)9.6 (+ 2.1)0.06
Infertility Diagnosis (%)Unexplained – (23%)Unexplained – (27%)0.3
DOR – (3%)DOR – (7%)
Endometriosis – (5%)Endometriosis – (3%)
Ovulation disorders – (11%)Ovulation disorders – (10%)
Male factor – (25%)Male factor – (19%)
Othera – (33%)Othera – (34%)
Number of embryos transferred per cycle, n (%)1–118 (67.4%)1–233 (67%)0.8
2–56 (32%)2–112 (32%)
3–1 (0.6%)3–4 (1%)
PGT testing of embryo, n (%)46/175 (26%)121/349 (35%)0.05
  1. a = Included patients with tubal factor, uterine factor and other as infertility diagnoses