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Table 4 Multiple linear regression analysis of possible determinants for total dose of gonadotropins in Group 1

From: Association of basal serum testosterone levels with ovarian response and in vitro fertilization outcome

  Coefficients  
  Unstandardized coefficients Standardized coefficients  
Independent variables β Std. Error β t P value
(constant) -464.984 819.634   -0.567 0.571
Age (years) -8.988 18.659 -0.032 -0.482 0.631
BMI (kg/m2) 40.781 25.082 0.098 1.626 0.106
Basal T levels (ng/dl) -8.833 3.516 -0.145 2.512 0.013
Basal FSH level (IU/L) 89.904 31.525 0.166 2.852 0.005
Antral follicle count -26.244 13.797 -0.109 -1.902 0.059
Starting dose of gonadotropins (IU) 9.633 1.168 0.531 8.244 <0.001
  1. Note: The dependent variable is total dose of gonadotropins. The model (r = 0.647, r2 = 0.419, adjusted r2 = 0.399, P < 0.001).
  2. The values of the standardized coefficients reflect the independent contributions of each predictor to dependent variables.