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Table 1 Significant associations with RF, BRT, LASSO and UFMLR

From: Detection of independent associations in a large epidemiologic dataset: a comparison of random forests, boosted regression trees, conventional and penalized logistic regression for identifying independent factors associated with H1N1pdm influenza infections

  RF BRT LASSO-max LASSO-se UFMLR05 UFMLR05 backward UFMLR20 UFMLR20 backward
Covariates         
Pre-seasonal HAI titer (log) 0.004 0.003 0.001 0.001 0.001 0.002 0.002 0.001
History of asthmab 0.009 0.012 0.001 0.001 0.009 0.019   0.004
Professional activity involves contact with ill peopleb 0.009 0.023 0.008     0.001 0.001
Age (years)   0.004 0.001 0.001   0.001   
Daily frequency of hand washing (with soap or hand sanitizer) ≥ 5b 0.014 0.023 0.019      0.008
Always or often covers mouth while coughing or sneezingb 0.033 0.023 0.003 0.001     
“Craftsman, shopkeeper, chief executive officer” (socio-professional group)b   0.036 0.006     0.047  
History of chemotherapyb 0.048   0.021     0.027  
Average living room temperature (°C)    0.001 0.001   0.031 0.047 0.002
Presence of a dishwasher in the kitchenb    0.002 0.001 0.048 0.007   0.007
Sex = maleb 0.048        
Professional activity is primarily outdoorsb 0.045        
Age < 15 yearsb 0.016        
Any respiratory diseaseb 0.030        
Number of children (<15 years) in the household (n) 0.004        
Body mass index (kg/m2)   0.032       
Proportion of inhabitants > 15 years without a diploma (in IRIS zonei)   0.024       
Proportion of habitations rented by inhabitants (in IRIS zonei)   0.023       
Proportion of habitations owned by inhabitants (in IRIS zonei)   0.049       
Habitation = houseb   0.016       
Duration of contacts with subjects aged between 60 and 99 years (log (min))    0.006     0.023 0.019
Number of subjects in the household (n)    0.002 0.002     
Kitchen surface area per subject (m2)    0.005 0.002     
Cardiac arrhythmiab    0.021      
History of radiotherapyb    0.016      
Daily consumption of green tea (n)    0.040      
Number of birds inside habitation (n)    0.030      
Number of rooms per subject in habitation (n)    0.009      
Number of children in the bedroom (n)    0.010      
Bedroom windows face: gardenb    0.010      
Duration of contacts at home (log (min))    0.029      
Longitude of the habitation (degrees)    0.027      
Latitude of the habitation (degrees)    0.028      
Proportion of “farmer, primary sector” (socio-professional group) (in IRIS zonei)    0.004      0.005
Kitchen filtration of areab        0.021 0.034
Tiles flooring in the kitchenb        0.015 0.029
Agricultural land near habitationb        0.048  
  1. bbinary covariate. iIRIS zones are statistical block groups of about 2000 inhabitants defined by the French Institut National de la Statistique et des Etudes Economiques (INSEE).