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Table 8 Descriptive data for fluorosis TF scores

From: The association between social deprivation and the prevalence and severity of dental caries and fluorosis in populations with and without water fluoridation

  City Mann Whitney U
  Newcastle fluoridated Manchester non-fluoridated  
  Number % Number %  
Fluorosis TF Score      U = 264614, z = −13.025, p < 0.0001
0 410 45% 638 73%  
1 355 39% 209 24%  
2 79 9% 16 2%  
3 53 6% 4 1%  
4 8 1% 0 0%  
5 1 0.1% 2 0.2%  
Total 906   869