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Table 1 Frequency counts of subjects at each level of TF Index score

From: Evaluating the use of fluorescent imaging for the quantification of dental fluorosis

Photographic TF Score City (frequency counts) Total
Newcastle Manchester
n % n %  
0 409 45% 638 73% 1047
1 355 39% 209 24% 564
2 79 9% 16 2% 95
3 53 6% 4 1% 57
4 8 1% 0 0% 8
5 1 0.1% 2 0.2% 3
Total 905   869   1774