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Table 3 Spearman’s rank correlation matrices for cases and controls – BMI, stressful events, alcohol intake, activity level and smoking prevalence across all each time periods

From: Connecting the dots between breast cancer, obesity and alcohol consumption in middle-aged women: ecological and case control studies

  BMI Stress Alcohol Activity Smoking
18 to 30 years
Cases
 BMI 1.000     
 No. of stressful life events − 0.113 1.000    
 Standard drinks per month 0.019 0.006 1.000   
 Light activity prevalence − 0.078 0.214 − 0.109 1.000  
 Smoking prevalence 0.000 0.003 0.204 0.137 1.000
Controls
 BMI 1.000     
 No. of stressful life events 0.052 1.000    
 Standard drinks per month 0.067 0.065 1.000   
 Light activity prevalence 0.090 −0.022 0.159 1.000  
 Smoking prevalence −0.040 0.174* 0.143 − 0.144 1.000
31 to 40 years
Cases
 BMI 1.000     
 No. of stressful life events 0.055 1.000    
 Standard drinks per month 0.003 −0.053 1.000   
 Light activity prevalence 0.120 −0.031 −0.045 1.000  
 Smoking prevalence 0.030 −0.022 0.367* 0.153 1.000
Controls
 BMI 1.000     
 No. of stressful life events 0.123 1.000    
 Standard drinks per month −0.037 − 0.035 1.000   
 Light activity prevalence 0.132 −0.031 −0.020 1.000  
 Smoking prevalence 0.056 0.142* 0.215* 0.034 1.000
41 to 50 years
Cases
 BMI 1.000     
 No. of stressful life events 0.283* 1.000    
 Standard drinks per month − 0.254 − 0.001 1.000   
 Light activity prevalence 0.239 0.133 −0.124 1.000  
 Smoking prevalence 0.101 −0.214 −0.075 0.135 1.000
Controls
 BMI 1.000     
 No. of stressful life events 0.210* 1.000    
 Standard drinks per month −0.049 0.077 1.000   
 Light activity prevalence 0.179* 0.143* 0.009 1.000  
 Smoking prevalence 0.070 0.105 0.055 0.012 1.000
51 to 60 years
Cases
 BMI 1.000     
 No. of stressful life events 0.022 1.000    
 Standard drinks per month −0.182 0.137 1.000   
 Light activity prevalence 0.245 0.239 0.068 1.000  
 Smoking prevalence −0.132 − 0.143 − 0.182 − 0.121 1.000
Controls
 BMI 1.000     
 No. of stressful life events 0.034 1.000    
 Standard drinks per month −0.107 −0.016 1.000   
 Light activity prevalence 0.295* 0.009 − 0.063 1.000  
 Smoking prevalence 0.152* −0.104 − 0.001 0.099 1.000
61 to 70 years
Cases
 BMI 1.000     
 No. of stressful life events 0.034 1.000    
 Standard drinks per month −0.377 0.126 1.00   
 Light activity prevalence 0.024 −0.052 0.447 1.000  
 Smoking prevalence**
Controls
 BMI 1.000     
 No. of stressful life events −0.010 1.000    
 Standard drinks per month −0.150 −0.021 1.000   
 Light activity prevalence 0.322* 0.097 − 0.211 1.000  
 Smoking prevalence**
  1. *p < 0.05
  2. **smoking omitted due to low cell counts