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Table 2 Mean value ± standard deviation, (skewness index) of DMFT index and components in 1989, 1992, 1995, and 1999, 2004.

From: Changing trend of caries from 1989 to 2004 among 12-year old Sardinian children

Year DMFT DT MT FT
1989 4.3 ± 3.1 (γ1 = 0.49) 1.9 ± 2.1 0.1 ± 0.5 2.2 ± 2.4
1992 4.1 ± 3.4 (γ1 = 0.90) 2.1 ± 2.5 0.1 ± 0.6 1.9 ± 2.6
1995 3.0 ± 2.8 (γ1 = 1.20) 1.5 ± 2.3 0.1 ± 0.1 1.4 ± 1.8
1999 2.3 ± 2.7 (γ1 = 1.31) 1.7 ± 2.2 0.05 ± 0.1 0.7 ± 1.4
2004 0.8 ± 1.57 (γ1 = 1.45) 0.5 ± 1.04 0.02 ± 0.2 0.3 ± 0.9
Anova one way p < 0.01 p < 0.01 p < 0.01 p < 0.01