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Table 1 Demographic features and clinical parameters between two groups

From: Is a high serum copper concentration a risk factor for implantation failure?

 

NP (n = 173)

P (n = 96)

P value

Age (years)

34.8 ± 3.8

34.1 ± 4.0

NS

BMI (kg/m2)

21.0 ± 2.6

21.2 ± 3.5

NS

Cu (μg/dL)

193.2 ± 31.4

178.1 ± 34.4

0.0004

Zn (μg/dL)

75.5 ± 14.1

90.7 ± 38.8

0.0003

Cu/Zn ratio

2.66 ± 0.71

2.23 ± 0.83

0.00003

E2 (pg/mL)

271 ± 167

302 ± 168

NS

P4 (ng/mL)

13.1 ± 4.9

13.2 ± 4.7

NS

hCG (IU/L)

0.3 ± 1.1

555 ± 488

<0.00001

Ceruloplasmin (mg/dL)

39.6 ± 6.0

NT

  1. Patients who were at the first freeze and thaw embryo transfer attempt with good blastocysts (3BB or more with Gardner’s classification) and who were <40 years old were included. Values indicate the mean ± standard deviation. The Student’s t test (non-homogeneity, two-sided) was used for comparisons between two groups
  2. NP not pregnant, P pregnant without miscarriage at 10 weeks of gestation, NS not significant, NT not tested