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Table 6 Mutually-adjusted differences in mammographic density measures across education and Townsend categories

From: Mammographic density and markers of socioeconomic status: a cross-sectional study

SES Variable Percent density1 P-value2 Dense area3 P-value2 Lucent area4 P-value2
Minimally-adjusted 5       
Level of education       
   Higher 0   0   0  
   Further -6.3 (-11.3,-0.7) 0.02 -6.3 (-11.9,-0.0) 0.11 15.0 (-0.7,32.0) 0.01
   None/GCSE -5.9 (-10.2,-1.1)   -4.4 (-9.4,1.0)   17.2 (3.5,31.8)  
Townsend Score6       
   Q5 (affluent) 0   0   0  
   Q4 -2.0 (-7.2,3.8)   -1.7 (-7.5,4.7)   6.4 (-7.9,21.9)  
   Q3 -2.4 (-8.0,3.9) 0.38 -1.4 (-7.8,5.6) 0.96 7.7 (-8.0,24.8) 0.04
   Q2 -0.7 (-7.9,7.5)   3.3 (-5.1,12.8)   14.7 (-5.6,37.1)  
   Q1 (deprived) -5.1 (-13.5,5.1)   -2.8 (-12.6,8.8)   24.4 (-2.8,55.3)  
BMI-adjusted 7       
Highest education level       
   Higher 0   0   0  
   Further -4.4 (-8.9,0.6) 0.06 -4.9 (-10.5,1.2) 0.25 7.9 (-4.0,20.6) 0.05
   None/GCSE -4.0 (-7.9,0.2)   -3.2 (-8.1,2.2)   10.4 (0.1,21.3)  
Townsend score6       
   Q5 (affluent) 0   0   0  
   Q4 -0.9 (-5.5,4.0)   -0.9 (-6.6,5.2)   2.9 (-8.1,14.6)  
   Q3 0.2 (-4.9,5.8) 0.51 0.4 (-5.9,7.3) 0.34 -1.0 (-12.7,11.6) 0.73
   Q2 3.2 (-3.5,10.5)   5.8 (-2.6,15.2)   2.9 (-12.0,19.2)  
   Q1 (deprived) 0.5 (-7.7,10.0)   1.1 (-9.2,12.9)   5.0 (-14.7,26.9)  
  1. 1 For a reference value of 30%
  2. 2 P-value for linear trend in mammographic values across categories of a given SES variable
  3. 3 For a reference value of 35 cm2
  4. 4 For a reference value of 90 cm2
  5. 5 Adjusted for age at mammography and mammographic view
  6. 6 Q1 to Q5 refer to England and Wales general population fifths of Townsend scores at LSOA level
  7. 7 Additionally adjusted for BMI