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Table 3 Results of Chi-Square tests on Select Variables and Bivariate Logistic Regression of Significant Variables from Chi-Square Tests

From: A case-control study of determinants for high and low dental caries prevalence in Nevada youth

Variable Control Group Case Group Χ2Statistics Caries Free vs. Top 30% DMFT Score Wald Statistic
  N % N %   OR (95% CI)  
Sex         21.25*
   Male 1086 53.1 953 44.9 27.64* 1.00   
   Female 959 46.9 1171 55.1   1.25 (1.09-1.41)  
Age‡         58.40***
   12-15 1654 81.0 1346 63.3 161.06** 1.00   
   16-19 388 19.0 781 36.7   2.04 (1.75 - 2.33)  
Dental Insurance         46.59*
   Insured 1176 75.4 1353 66.6 63.13** 1.00   
   Not Insured 383 24.6 678 33.4   1.50 (1.25 - 1.75)  
Race Group‡         152.78***
   White, Non-  
   Hispanic † 1296 63.5 842 39.6     
   Black, Non-   240.08** 1.00  
   Hispanic 173 8.5 278 13.1   1.75 (0.82 - 2.98)  
   Hispanic † 573 28.0 1007 47.3   2.35 (2.05 - 2.55)  
Fluoridation         57.73***
   Fluoridation 1324 64.7 580 27.3   1.00   
   Without      35.21*    
   Fluoridation 721 35.3 1544 72.7   1.98 (1.40 - 2.56)  
Second Hand Smoke 565 27.8 871 41.2   1.00   32.38*
   Exposed 1470 72.2 1244 58.8 85.41** 1.33   
   Non-exposed        (1.08 - 1.58)  
Smoking Status         2.05
   Currently Smoke 215 15.4 372 23.6 31.01* 1.00   
   Currently do not Smoke 1177 84.6 1204 76.4   1.16 (0.94-1.38)  
Applied Sealants         52.88***
   No Sealants 752 36.8 1153 54.2   1.00   
   Sealants 1290 63.2 974 45.8 126.13** 1.52 (1.39-1.65)  
  1. Note: *p < 0.05; ** p < 0.01; ***p < 0.001; D-Score and DMFT Scores computed on the 30% with the highest DMFT Scores; ‡ Groups as Defined in NHANES, 2007; †Significant differences between 2 groups only