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Table 3 Probability and differences in consumption of CB according to PW intake in adults

From: Plain water consumption is associated with lower intake of caloric beverage: cross-sectional study in Mexican adults with low socioeconomic status

  Coefficient Standard error Z P 95% CI
First stage: Probit model
CBα      
PWα −0.5406 0.2482 2.18 0.029 −1.0271 – -0.0541
Low-fat milk, skim milk and beverages without added sugar (mL)α −0.8721 0.1518 5.74 <0.001 −1.1698 – -0.5744
Second stage: multiple linear regression model    
CB (mL)      
PW (mL) −0.1924 0.0187 −10.24 <0.001 −0.2292 – -0.1555
Low-fat milk, skim milk and beverages without added sugar (mL) −0.4673 0.0552 −8.46 <0.001 −0.5757 – -0.3590
Age (years) −0.2708 1.6067 −0.17 0.8 −3.4199 – 2.8782
Sex (0 = male, 1 = female) −279.5922 43.8127 −6.38 <0.001 −365.46 – -193.72
BMI (kg/m2) 6.2841 3.4234 1.84 0.066 −0.4257 – 12.9939
Education 1 = Elementary 1     
  2 = High school 108.9816 36.9371 2.95 0.003 36.586 – 181.377
  3 = Bachelor’s degree 257.6571 67.6873 3.81 <0.001 124.99 – 390.32
Physical activity 1 = Light 1     
2 = Moderate 20.5962 37.7636 0.55 0.585 −53.41 – 94.611
3 = Vigorous 80.8213 50.0588 1.61 0.106 −17.29 – 178.93
Constant 1392.072 135.28 10.29 <0.001 1126.91 – 1657.23
  1. α0 = nondrinker; 1 = drinker.
  2. Dependent variable.
  3. CB, caloric beverage; PW, plain water; BMI, body mass index.