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Table 2 Multivariate associations1 between characteristics and urine 1-hydroxypyrene glucuronide (1-OHPG) concentration in the healthy subjects from Rio Grande de Sul

From: Higher urine 1-hydroxy pyrene glucuronide (1-OHPG) is associated with tobacco smoke exposure and drinking maté in healthy subjects from Rio Grande do Sul, Brazil

Characteristic Estimate [2] 95% Confidence interval P-value [3]
Intercept -0.74 -1.56, 0.079 0.076
Male -0.048 -0.31, 0.22 0.72
Urban residence 0.028 -0.28, 0.33 0.86
Ever drink cachaHa 0.20 -0.13, 0.54 0.23
Age quartile 1 Reference   
Age quartile 2 0.097 -0.23, 0.42 0.56
Age quartile 3 0.40 0.082, 0.72 0.014
Age quartile 4 0.17 -0.17, 0.50 0.33
Smoke Exposure4 0.98 0.045, 1.52 0.0004
Maté 0.53 0.16, 0.90 0.0053
Interaction (Smoke * Maté) -0.51 -1.05, 0.10 0.11
Prepare barbeque weekly 0.21 -0.20, 0.62 0.32
Interaction (Smoke * BBQ) -0.48 -1.026, 0.015 0.057
  1. [1] All estimates come from a single multivariate linear regression model. The total model r2 was 0.21
  2. [2] The model was fit using log10 transformed urine 1-OHPG concentrations.
  3. [3] All P-values come from F-tests.
  4. [4] Subjects reporting current smoking or a cotinine value greater then 1 were considered smoke exposed.