Table 2

DMFT score in association with clinical characteristics
Characteristics Values (mean ± SD) Statistics
Age group F(2, 488) = 93.02, p < 0.001
< 40 years (N =75) 10.7 ± 6.2 a p < 0.001 vs. 40–59 years; p < 0.001 vs. ≥ 60 years
40 - 59 years (N = 221) 18.8 ± 7.0 b p < 0.001 vs. < 40 years; p < 0.001 vs. ≥ 60 years
≥ 60 years (N = 227) 23.5 ± 6.3 c p < 0.001 vs. < 40 years; p < 0.001 vs. 40–59 years
Smoking F(1, 488) = 13.83, p < 0.001
Yes (N = 172) 21.1 ± 7.4 N.A.
No (N = 351) 19.0 ± 8.0 N.A.
Frequency of daily tooth brushing F(3, 488) = 8.26, p < 0.001
< Once/day (N = 136) 23.5 ± 7.2 d p < 0.001 vs. once daily; p < 0.001 vs. twice daily
Once/day (N = 155) 19.4 ± 7.6 e p < 0.001 vs. no daily tooth brushing
Twice/day (N = 99) 17.6 ± 7.8 f p < 0.001 vs. no daily tooth brushing
≥ Three times/day (N = 133) 17.7 ± 7.4 g p < 0.001 vs. no daily tooth brushing
The UKU Tremor subscore F(3, 488) = 6.53, p < 0.001
0 (N = 294) 18.1 ± 7.8 h p = 0.001 vs. score 1; p < 0.001 vs. score 2; p < 0.001 vs. score 3
1 (N = 166) 20.6 ± 7.8 i p = 0.001 vs. score 0; p < 0.001 vs. score 2; p = 0.005 vs. score 3
2 (N = 36) 25.1 ± 4.4 j p < 0.001 vs. score 0; p < 0.001 vs. score 1
3 (N = 23) 25.1 ± 4.9 k p < 0.001 vs. score 0; p = 0.005 vs. score 1
Daily intake of sweets F(1, 488) = 3.62, p = 0.058
Yes (N = 363) 20.1 ± 7.9 N.A.
No (N = 160) 18.7 ± 7.7 N.A.

SD, standard deviation; the DMFT, the Decayed-Missing-Filled Teeth, N.A., not available.

A univariate general linear model: corrected Model: F(23, 483) = 3.55, p < 0.001, R2 = 0.42.

Pair wise comparisons were performed by the Tukey-Kramer HSD (honestly significant difference) when the univariate general linear model showed a significant effect of any subgroup/category-of-interest on the DMFT index.

Tani et al.

Tani et al. BMC Oral Health 2012 12:32   doi:10.1186/1472-6831-12-32

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