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Table 2

Logistic regression summary for predicting bottled water use at home (n = 3,256)

PredictorBetaStandard errorsOdd ratios95% Confidence intervalWald statisticp
Female 0.18 0.08 1.20 [1.02, 1.41] 4.58 0.032 
Age 0.01 0.01 1.01 [0.99, 1.02] 1.17 0.280 
Origin from West Virginia 0.37 0.08 1.44 [1.22, 1.70] 18.81 <0.001 
Student type (control Freshmen)     47.26 <0.001 
 Sophomore −0.42 0.14 0.66 [0.50, 0.87] 8.91 0.003 
 Junior −0.65 0.14 0.52 [0.40, 0.68] 21.94 <0.001 
 Senior −0.85 0.14 0.43 [0.33, 0.56] 38.19 <0.001 
 Graduate or professional −0.82 0.14 0.44 [0.34, 0.58] 34.37 <0.001 
Organoleptic perceptions −0.45 0.05 0.64 [0.58, 0.71] 71.42 <0.001 
Perceived health risks 0.37 0.06 1.45 [1.28, 1.64] 34.73 <0.001 
Environmental concern (squared) −0.07 0.01 0.93 [0.92, 0.95] 93.77 <0.001 
Trust in EPA −0.01 0.01 0.99 [0.98, 1.01] 0.31 0.579 
Trust in US government 0.01 0.01 1.01 [0.99, 1.02] 0.65 0.420 
Pseudo R2 (Nagelkerke) 0.145 
PredictorBetaStandard errorsOdd ratios95% Confidence intervalWald statisticp
Female 0.18 0.08 1.20 [1.02, 1.41] 4.58 0.032 
Age 0.01 0.01 1.01 [0.99, 1.02] 1.17 0.280 
Origin from West Virginia 0.37 0.08 1.44 [1.22, 1.70] 18.81 <0.001 
Student type (control Freshmen)     47.26 <0.001 
 Sophomore −0.42 0.14 0.66 [0.50, 0.87] 8.91 0.003 
 Junior −0.65 0.14 0.52 [0.40, 0.68] 21.94 <0.001 
 Senior −0.85 0.14 0.43 [0.33, 0.56] 38.19 <0.001 
 Graduate or professional −0.82 0.14 0.44 [0.34, 0.58] 34.37 <0.001 
Organoleptic perceptions −0.45 0.05 0.64 [0.58, 0.71] 71.42 <0.001 
Perceived health risks 0.37 0.06 1.45 [1.28, 1.64] 34.73 <0.001 
Environmental concern (squared) −0.07 0.01 0.93 [0.92, 0.95] 93.77 <0.001 
Trust in EPA −0.01 0.01 0.99 [0.98, 1.01] 0.31 0.579 
Trust in US government 0.01 0.01 1.01 [0.99, 1.02] 0.65 0.420 
Pseudo R2 (Nagelkerke) 0.145 
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