Table 2

Pairwise comparisons for water fluoride intervals from cooking water and Photographic TF scores, “convex hull” and Existing method outcomes
Photographic TF score Dependant variable water interval Convex hull software Dependant variable water interval Existing technique Dependant variable water interval
0 1 0.02 0 1 0.11 0 1 0.24
2 <0.001* 2 0.004* 2 0.036
3 <0.001* 3 <0.001* 3 <0.001*
4 <0.001* 4 <0.001* 4 <0.001*
1 0 0.02 1 0 0.11 1 0 0.24
2 0.11 2 0.18 2 0.34
3 <0.001* 3 <0.001* 3 0.005*
4 <0.001* 4 <0.001* 4 <0.001*
2 0 <0.001* 2 0 0.004* 2 0 0.036
1 0.11 1 0.18 1 0.34
3 0.049 3 0.016 3 0.076
4 <0.001* 4 <0.001* 4 <0.001*
3 0 <0.001* 3 0 <0.001* 3 0 <0.001*
1 <0.001* 1 <0.001* 1 0.005*
2 0.049 2 0.016 2 0.076
4 0.01 4 0.11 4 0.027
4 0 <0.001* 4 0 <0.001* 4 0 <0.001*
1 <0.001* 1 <0.001* 1 <0.001*
2 <0.001* 2 <0.001* 2 <0.001*
3 0.01 3 0.11 3 0.076

* *difference considered significant at the 0.005 level.

Water Intervals: 0 = < 0.2 ppm, 1 = 0.20-0.59 ppm, 2 = 0.60-0.89 ppm, 3 = 0.90-1.59 ppm, 4 = 1.6 + ppm.

McGrady et al.

McGrady et al. BMC Oral Health 2012 12:33   doi:10.1186/1472-6831-12-33

Open Data