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Table 1 Characteristic of included patients based on D14 TSH levels

From: The impact of TSH levels on clinical outcomes 14 days after frozen-thawed embryo transfer

  Low TSH (N = 125) Middle TSH (N = 139) High TSH (N = 61) p-value
Age (year) 30.73 ± 3.73 30.66 ± 3.64 30.11 ± 4.24 0.56
AMH (pmol/l) 23.74 ± 19.1 32.13 ± 26.8 28.23 ± 19.12 0.02
BMI (kg/m2) 23.35 ± 2.89 23.87 ± 3.19 23.63 ± 2.98 0.34
Basal TSH (IU/l) 2.01 ± 0.67 2.49 ± 0.86 2.75 ± 0.78 < 0.01
FT3 (pmol/l) 4.91 ± 0.52 4.70 ± 0.52 4.81 ± 0.68 0.01
FT4 (pmol/l) 16.95 ± 2.28 16.40 ± 2.41 16.29 ± 2.60 0.10
NO. of transferred blastocysts
 0 47(42.34%) 49(44.14%) 15(13.51%) 0.26
 1 67(35.64%) 78(41.49%) 43(22.87%)  
 2 11(42.31%) 12(46.15%) 3(11.54%)  
Clinical outcomes
 Pregnancy 70(56.00%) 98(70.50%) 38(62.30%) 0.05
 Miscarriage 10(16.06%) 12(15.30%) 7(22.58%) 0.74
  1. Data are expressed as the mean ± SD and n (%)
  2. D14 TSH TSH levels 14 days after embryo transfer; AMH anti-mullerian hormone; BMI body mass index; TSH thyroid stimulating hormone