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Table 3 Univariate analyses of relations between quantitative ultrasound bone measurements and risk factors for osteoporosis (n = 153)

From: Plasma organochlorine concentrations and bone ultrasound measurements: a cross-sectional study in peri-and postmenopausal Inuit women from Greenland

  BUA (dB/MHz) SOS (m/sec) Stiffness index (%)
  Mean ± SD p-value* Mean ± SD p-value* Mean ± SD p-value*
Smoking habits       
   Smoker 107.2 ± 11.5 0.025 1521.9 ± 27.3 0.409 77.5 ± 14.5 0.099
   Former and never smoker 110.9 ± 7.7   1525.9 ± 22.4   81.1 ± 10.5  
Physical activity       
   Sedentary 107.2 ± 10.9 0.075 1520.6 ± 25.2 0.064 77.2 ± 13.4 0.048
   Active 110.8 ± 10.0   1529.5 ± 28.0   82.1 ± 13.7  
Dairy products       
   0 to 2/day 108.4 ± 10.8 0.668 1523.3 ± 26.6 0.767 78.7 ± 13.7 0.713
   ≥3/day 107.6 ± 10.8   1521.9 ± 25.2   77.8 ± 13.5  
Calcium supplement       
   Yes 114.2 ± 5.6 0.001 1527.8 ± 22.0 0.485 83.9 ± 9.2 0.130
   No 107.6 ± 11.0   1522.5 ± 26.5   78.0 ± 13.9  
Menopause       
   Yes 106.7 ± 9.9 0.024 1518.9 ± 24.7 0.001 76.3 ± 12.6 0.003
   No 112.8 ± 13.5   1540.4 ± 28.9   86.5 ± 16.3  
Current HRT use       
   Yes 117.1 ± 9.7 0.002 1546.9 ± 20.0 < 0.001 91.3 ± 10.8 < 0.001
   No 107.3 ± 10.5   1520.7 ± 25.6   77.3 ± 13.2  
Former contraceptive use       
   Yes 112.1 ± 9.8 < 0.001 1534.3 ± 25.1 < 0.001 84.3 ± 12.7 < 0.001
   No 105.4 ± 10.6   1515.1 ± 24.0   74.5 ± 12.8  
  1. *Student t Test