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Table 4 Threshold effect of E2 level (100 pg/ml) on birthweight outcomes using piece-wise linear regression

From: E2 level > 2950 pg/ml on hCG trigger day is an independent predictor for birthweight loss of full-term singletons born after fresh embryo transfers in non-PCOS patients

Characteristics

Crude β/OR

(95% CI)

P value

aAdjust β/OR

(95% CI)

P value

SGA

 ≤29.50

0.927 (0.614, 1.477)

0.623

1.002 (0.819, 1.152)

0.281

 > 29.50

1.031 (1.014, 1.075)

0.029

1.163 (1.073, 1.325)

0.0027

Birthweight (g)

  ≤31.21

1.90 (−3.94, 7.74)

0.5236

−2.94 (−11.75, 5.86)

0.5123

  > 31.21

−15.14 (−22.30, −7.98)

< 0.0001

− 15.77 (− 23.87, − 7.67)

0.0001

  1. aAnalyses were adjusted for couple’s age, maternal BMI, basal FSH, AMH, prior gonadotropin cycle, COS protocols, total Gn dose, stimulation duration, fertilization method, number of oocytes retrieved, endometrial type, number and stage of embryos transferred, newborn sex