Table 4

Frequency counts for subject DMFT status and comparison between cities for both clinical and photographic scores
City
Clinical Photo
Newcastle Fluoridated (910) Manchester Non-fluoridated (873) Newcastle Fluoridated (910) Manchester Non-fluoridated (873)
Caries D1-6MFT (white spot lesion)
0 228 (25%) 133 (15%) 298 (33%) 177 (20%)
1 115 (13%) 78 (9%) 136 (15%) 134 (15%)
2 115 (13%) 92 (10%) 120 (13%) 112 (13%)
3 88 (10%) 103 (12%) 87 (10%) 95 (11%)
4 169 (19%) 132 (15%) 90 (10%) 91 (10%)
5 67 (7%) 53 (6%) 49 (5%) 63 (7%)
6+ 128 (14%) 283 (32%) 130 (14%) 201 (23%)
Mann Whitney U Mann Whitney U
U = 303698, z = −8.683, p < 0.0001 U = 326578, z = −6.950, p < 0.0001
Caries D4-6MFT (caries into dentine)
0 614 (68%) 473 (54%) 626 (69%) 475 (54%)
1 134 (15%) 149 (17%) 144 (16%) 165 (19%)
2 86 (10%) 111 (13%) 77 (9%) 112 (13%)
3 37 (4%) 58 (7%) 36 (4%) 59 (7%)
4 25 (3%) 52 (6%) 18 (2%) 44 (5%)
5 10 (1%) 18 (2%) 6 (1%) 8 (1%)
6+ 3 (0.4%) 4 (1%) 3 (0.3%) 10 (1%)
Mann Whitney U Mann Whitney U
U = 337110, z = −6.300, p < 0.0001 U = 333436, z = −6.741, p < 0.0001

McGrady et al.

McGrady et al. BMC Public Health 2012 12:1122   doi:10.1186/1471-2458-12-1122

Open Data