| N | Prevalence of dental caries (%) | Mean dmft/DMFT score | Caries restoration rates (%) | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Boys | Girls | Total | Boys | Girls | Total | χ2 | P value | Boys | Girls | Total | F/t value | P value | Boys | Girls | Total | χ2 | p-value | |
Age (Years) | ||||||||||||||||||
 6 | 38,338 | 32,401 | 70,739 | 52.62 | 54.15 | 53.32 |  |  | 1.98 | 2.02 | 2.00 |  |  | 7.51 | 7.58 | 7.54 |  |  |
 7 | 88,386 | 71,384 | 159,770 | 55.12 | 57.02 | 55.97 |  |  | 2.00 | 2.05 | 2.02 |  |  | 8.80 | 8.95 | 8.87 |  |  |
 8 | 90,110 | 72,901 | 163,011 | 57.82 | 59.62 | 58.62 |  |  | 1.98 | 2.02 | 2.00 |  |  | 9.22 | 9.57 | 9.38 |  |  |
 9 | 84,992 | 68,487 | 153,479 | 53.55 | 54.26 | 53.87 |  |  | 1.65 | 1.62 | 1.64 |  |  | 9.09 | 9.67 | 9.35 |  |  |
 10 | 75,091 | 58,468 | 133,559 | 44.89 | 44.57 | 44.75 |  |  | 1.18 | 1.12 | 1.15 |  |  | 8.95 | 9.92 | 9.37 |  |  |
 11 | 64,922 | 50,215 | 115,137 | 32.02 | 33.74 | 32.77 |  |  | 0.72 | 0.75 | 0.73 |  |  | 10.70 | 11.52 | 11.06 |  |  |
 12 | 60,599 | 47,100 | 107,699 | 21.80 | 25.87 | 23.58 |  |  | 0.43 | 0.54 | 0.48 |  |  | 12.55 | 13.31 | 12.88 |  |  |
 13 | 48,211 | 37,106 | 85,317 | 19.32 | 25.94 | 22.20 |  |  | 0.38 | 0.55 | 0.45 |  |  | 13.62 | 15.64 | 14.50 |  |  |
 14 | 42,200 | 32,570 | 74,770 | 19.52 | 26.64 | 22.62 |  |  | 0.40 | 0.59 | 0.48 |  |  | 16.18 | 20.87 | 18.22 |  |  |
 15 | 31,220 | 25,328 | 56,548 | 18.57 | 25.69 | 21.76 |  |  | 0.38 | 0.57 | 0.47 |  |  | 20.01 | 24.21 | 21.89 |  |  |
 16 | 26,237 | 22,276 | 48,513 | 17.21 | 24.93 | 20.75 |  |  | 0.34 | 0.55 | 0.44 |  |  | 25.32 | 33.34 | 29.00 |  |  |
 17 | 12,198 | 9692 | 21,890 | 17.36 | 24.58 | 20.56 |  |  | 0.36 | 0.56 | 0.45 |  |  | 28.49 | 35.23 | 31.47 |  |  |
 18+ | 3224 | 2348 | 5572 | 17.25 | 24.02 | 20.10 | 112,617.0 | < 0.001 | 0.35 | 0.53 | 0.43 | 11,346.9 | < 0.001 | 24.98 | 25.17 | 25.06 | 15,876.6 | < 0.001 |
BMI | ||||||||||||||||||
 Moderate malnutrition | 29,545 | 19,165 | 48,710 | 50.08 | 51.55 | 50.66 |  |  | 1.65 | 1.65 | 1.65 |  |  | 9.21 | 10.49 | 9.72 |  |  |
 Mild malnutrition | 38,648 | 24,896 | 63,544 | 42.89 | 51.84 | 46.40 |  |  | 1.30 | 1.63 | 1.44 |  |  | 10.34 | 10.24 | 10.30 |  |  |
 Normal | 425,694 | 406,238 | 831,932 | 41.61 | 43.17 | 42.37 |  |  | 1.28 | 1.28 | 1.28 |  |  | 9.66 | 10.98 | 10.31 |  |  |
 Overweight | 95,514 | 46,360 | 141,874 | 33.16 | 37.77 | 34.66 |  |  | 0.94 | 1.09 | 0.99 |  |  | 10.29 | 11.85 | 10.85 |  |  |
 Obese | 68,857 | 28,784 | 97,641 | 33.21 | 37.27 | 34.41 | 7326.9 | < 0.001 | 0.95 | 1.06 | 0.98 | 1576.8 | < 0.001 | 10.08 | 10.49 | 10.21 | 55.4 | < 0.001 |
Type of school | ||||||||||||||||||
 Public | 424,856 | 344,130 | 768,986 | 36.04 | 39.00 | 37.36 |  |  | 1.09 | 1.14 | 1.11 |  |  | 10.86 | 12.81 | 11.73 |  |  |
 Private | 240,872 | 186,146 | 427,018 | 46.35 | 50.05 | 47.96 | 12,740.5 | < 0.001 | 1.43 | 1.53 | 1.47 | −88.9 | < 0.001 | 8.32 | 8.38 | 8.35 | 3283.6 | < 0.001 |
Total | 665,728 | 530,276 | 1,196,004 | 39.77 | 42.88 | 41.15 | Â | Â | 1.21 | 1.28 | 1.24 | Â | Â | 9.78 | 10.96 | 10.30 | Â | Â |