From: The association between social deprivation and the prevalence and severity of dental caries and fluorosis in populations with and without water fluoridation
City
Subject numbers
Mean age at exam (SD)
Gender %
Mean IMD* (range)
M
F
Newcastle
910
12.56 (0.48)
54
46
35.22 (2.77-78.85)
Manchester
873
12.32 (0.64)
57
43
37.04 (1.84-84.02)
Total
1783
12.44 (0.57)
56
44
36.11 (1.84-84.02)