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Table 1 Basic clinical data from subjects in this study

From: Effect of different artificial shrinkage methods, when applied before blastocyst vitrification, on perinatal outcomes

  Micro-needle AS Laser pulse AS P
FET cycles (n) 743 809 ----
Age (y) 30.75 ± 3.49 30.53 ± 3.38 0.203
Infertility duration (y) 3.65 ± 2.74 3.87 ± 2.88 0.120
Times of abortion 0.72 ± 0.91 0.71 ± 0.98 0.933
BMI (kg/m2) 20.89 ± 2.43 21.13 ± 2.50 0.056
Endometrial thickness (mm) 9.44 ± 1.77 9.47 ± 1.77 0.765
Basal FSH (IU/L) 6.95 ± 1.78 6.81 ± 1.68 0.111
Basal LH (IU/L) 5.81 ± 3.12 5.82 ± 3.67 0.967
Percentage of natural cycle 66.08 (491/743) 61.93 (501/809) 0.089
Mean number of frozen blastocysts 5.09 ± 3.30 5.18 ± 3.40 0.204
Mean number of embryos used for culture blastocyst 11.72 ± 6.09 11.99 ± 6.13 0.428
Mean number of cycles 1.19 ± 0.39 1.17 ± 0.37 0.0714
Mean number of collected oocytes 16.83 ± 7.21 17.47 ± 7.59 0.077