Table 2. Clinical characteristics of patients submitted to controlled ovarian hyperstimulation for in vitro fertilization (mean±SD)
Parameter Normal ovarian response n = 52 Poor ovarian response n = 14 p valuea
Age (years) 34.6±3.3 35.5±3.7 0.271
Infertility (years) 3.9±2.68 5.3±4.7 0.208
Menstrual cycles (days) 29.1±3.98 28.3±2.25 0.504
Ethnicity     0.341b
-Caucasian 25 4
-African-American 1 0
-Latin American 26  10 
Pregnancy (n) 0.08±0.33 0.21±0.57 0.093
BMIc (kg/m2) 24.6±3.18 22.0±3.10 0.005
Weight (kg) 65.9±9.38 56.4±8.13 0.001
Height (m) 1.6±0.06 1.5±0.06 0.117

aT-test
bChi-squared test
cBMI: Body mass index