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Table 1 Demographic data

From: The correlation between endometrial thickness and outcome of in vitro fertilization and embryo transfer (IVF-ET) outcome

Characteristics Group A
mean ± SD
Group B
mean ± SD
P value
Number of cycles (n) 882 1582  
Age (years) 30.27 ± 5.53 31.14 ± 5.38 0.0001
BMI (weight kg/height m2) 28.44 ± 4.58 28.32 ± 4.42 0.524
Long protocol # (%) 765 (39.4%) 1177 (60.6%) < 0.0001
Short protocol # (%) 117 (22.4%) 405 (77.6%)  
Stimulation length (days) 10.92 ± 2.63 10.79 ± 2.46 0.228
Dose of hMG (ampoules) 37.67 ± 15.03 40.73 ± 16.54 < .0001
Endometrial thickness cycle day 3 (mm) 3.23 ± 1.22 3.21 ± 1.22 0.696
Endometrial thickness hCG day (mm) 11.64 ± 2.13 11.26 ± 2.17 < 0.0001
Number of medium sized follicles 8.08 ± 5.33 7.12 ± 5.31 < 0.0001
Number of mature follicles 7.92 ± 3.51 7.62 ± 3.69 0.0475
Number of oocytes retrieved 10.51 ± 5.43 9.86 ± 5.73 0.006
Number of fertilized oocytes 5.79 ± 3.23 4.97 ± 3.35 < 0.0001
Number of embryos 5.3 ± 2.82 4.44 ± 2.81 < 0.0001
Number of embryos transferred 1.88 ± 0.37 1.98 ± 0.26 0.001