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Table 2 Toothache and independent variables.

From: Toothache and associated factors in Brazilian adults: a cross-sectional population-based study

Levels Variables Model 1* PR (95% CI) Model 2* PR (95% CI) Model 3* PR (95% CI) Model 4* PR (95% CI)
1 Sex p < 0.001 p < 0.001   
  Male 1.0 1.0   
  Female 1.6 (1.3;2.0) 1.6 (1.3;2.0)   
  Age groups-years p = 0.004 p = 0.001   
  20 – 29 1.0 1.0   
  30 – 39 0.9 (0.7;1.1) 0.9 (0.7;1.1)   
  40 – 49 0.6 (0.4;0.8) 0.5 (0.4;0.7)   
  50 – 59 0.6 (0.4;0.9) 0.5 (0.3;0.8)   
  Skin colour p = 0.001 p = 0.003   
  White 1.0 1.0   
  Lighter-skinned blacks 1.3 (0.9;1.7) 1.2 (0.9;1.6)   
  Dark skinned blacks 1.5 (1.2;2.0) 1.5 (1.1;1.9)   
  Yellow 1.5 (0.9;2.6) 1.4 (0.7;2.6)   
  Amerindian 1.4 (0.7;3.1) 1.6 (0.7;3.4)   
2 Per capita income-BMW a p < 0.001   p = 0.002  
  1,59 – 19,74 1.0   1.0  
  0,89 – 1,58 1.5 (1.0;2.2)   1.3 (0.9;1.9)  
  0,60 – 0,88 1.6 (1.0;2.2)   1.2 (0.9;1.7)  
  0,02 – 0,50 2.4 (1.7;3.4)   1.7 (1.2;2.3)  
  Educational attainment-years p < 0.001   p = 0.083  
  ≥ 12 1.0   1.0  
  9 – 11 1.4 (1.1;2.0)   1.2 (0.9;1.7)  
  5 – 8 1.5 (1.7;2.0)   1.4 (0.9;2.0)  
  ≤ 4 1.8 (1.2;2.7)   1.6 (0.9;2.7)  
3 CAGE score p = 0.156    p = 0.004
  0 1.0    1.0
  ≥ 1 1.0 (0.9;1.1)    1.4 (1.1;1.9)
  Smoking status p < 0.001    p < 0.001
  Never smoked 1.0    1.0
  Ex-smoked 1.2 (1.0;1.6)    1.3 (1.0;1.6)
  Current smoker 1.7 (1.4;2.1)    1.5 (1.2;1.9)
  Consumption of cigarettes- Package year p < 0.001    
  Never smoker 1.0    **
  < 10 1.9 (1.4;2.6)    
  ≥ 10 1.6 (1.3;2.0)    
  Type of dental service in the last attendance p = 0.049    
  Private 1.0    **
  SUS – public 1.9 (1.5;2.4)    
  Others 0.9 (0.6;1.3)    
  Use of dental service in the last year p < 0.001    p < 0.001
  Yes 1.0    1.0
  No 0.5 (0.4;0.7)    0.5 (0.4;0.6)
  1. a Brazilian Minimum Wage (worth of US$ 200,00).
  2. *Model 1 – crude unadjusted analysis.
  3. *Model 2 – variables in the block 1 adjusted for variables in the same level.
  4. *Model 3 – variables in the block 2 adjusted for variables in the same level and the levels above.
  5. *Model 4 – variables in the block 3 adjusted for variables in the same level and the levels above.
  6. **excluded due lost the statistical significance.
  7. All analysis were adjusted for the clustered sampling design and by the number of teeth.
  8. p value = Wald test.
  9. Poisson regression analysis (Prevalence ratio – PR and confidence intervals- 95% CI). Lages-SC, Brazil, 2007.