Table 1 Descriptive statistics for each cooking water interval for each of the metrics for fluorosis assessment
Cooking water intervals (ppm) | Photographic | Convex hull software | Existing technique | |||||
|---|---|---|---|---|---|---|---|---|
TF index Score | Area | ΔF | ΔQ | Area | ΔF | ΔQ | ||
N (%) | ||||||||
<0.20 | 103 (18.6) | Mean 0.70 | Mean 0.144 | Mean 0.047 | Mean 0.008 | Mean 0.096 | Mean 2.362 | Mean 0.233 |
SD 0.93 | SD 0.105 | SD 0.014 | SD 0.007 | SD 0.050 | SD 0.482 | SD 0.156 | ||
Median 0 | Median 0.099 | Median 0.044 | Median 0.004 | Median 0.081 | Median 2.255 | Median 0.228 | ||
Range 0-5 | Range 0.025-0.464 | Range 0.029-0.123 | Range 0.001-0.033 | Range 0.000-0.227 | Range 1.294-2.983 | Range 0.002-0.946 | ||
0.2 to 0.59 | 111 (20.1) | Mean 1.01 | Mean 0.181 | Mean 0.048 | Mean 0.010 | Mean 0.110 | Mean 2.264 | Mean 0.257 |
SD 1.02 | SD 0.130 | SD 0.013 | SD 0.010 | SD 0.054 | SD 0.455 | SD 0.166 | ||
Median 1 | Median 0.153 | Median 0.044 | Median 0.007 | Median 0.099 | Median 2.183 | Median 0.228 | ||
Range 0-5 | Range 0.023-0.555 | Range 0.030-0.094 | Range 0.007-0.046 | Range 0.000-0.227 | Range 1.356-2.364 | Range 0.002-0.946 | ||
0.6 to 0.89 | 120 (21.7) | Mean 1.28 | Mean 0.210 | Mean 0.053 | Mean 0.014 | Mean 0.121 | Mean 2.359 | Mean 0.304 |
SD 1.30 | SD 0.151 | SD 0.027 | SD 0.020 | SD 0.067 | SD 0.542 | SD 0.233 | ||
Median 1 | Median 0.163 | Median 0.046 | Median 0.007 | Median 0.103 | Median 2.283 | Median 0.227 | ||
Range 0-7 | Range 0.024-0.635 | Range 0.030-0.231 | Range 0.001-0.146 | Range 0.016-0.031 | Range 1.477-4.414 | Range 0.027-1.150 | ||
0.9 to 1.59 | 108 (19.5) | Mean 1.65 | Mean 0.252 | Mean 0.057 | Mean 0.017 | Mean 0.133 | Mean 2.392 | Mean 0.333 |
SD 1.47 | SD 0.162 | SD 0.019 | SD 0.016 | SD 0.065 | SD 0.494 | SD 0.205 | ||
Median 1 | Median 0.206 | Median 0.052 | Median 0.010 | Median 0.129 | Median 2.331 | Median 0.283 | ||
Range 0-6 | Range 0.039-0.678 | Range 0.030-0.231 | Range 0.001-0.080 | Range 0.004-0.272 | Range 1.324-3.873 | Range 0.006-0.892 | ||
1.6+ | 111 (20.1) | Mean 2.30 | Mean 0.299 | Mean 0.062 | Mean 0.022 | Mean 0.155 | Mean 2.592 | Mean 0.424 |
SD 1.90 | SD 0.179 | SD 0.026 | SD 0.022 | SD 0.075 | SD 0.582 | SD 0.289 | ||
Median 2 | Median 0.293 | Median 0.056 | Median 0.016 | Median 0.150 | Median 2.500 | Median 0.359 | ||
Range 0-7 | Range 0.025-0.715 | Range 0.030-0.203 | Range 0.001-0.145 | Range 0.001-0.340 | Range 1.345-4.630 | Range 0.002-1.399 | ||
Total | 553 (100) | |||||||