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Table 4 SiC Index, descriptive statistics: number of subject, mean value ± standard deviation. Number (percentage) of subjects with SiC Index >3.

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

Year number of subjects SiC mean ± SD SIC>3 n (%)
1989 123 7.8 ± 0.7 123 (33.0)
1992 104 7.4 ± 1.2 96 (30.5)
1995 135 5.6 ± 1.8 77 (18.7)
1999 133 5.5 ± 2.1 71 (17.5)
2004 99 3.90 ± 2.8 37 (12.4)
   Anova one way p < 0.001 χ2 p < 0.01
  1. The percentage of subjects with a SIC>3 was calculated on the total of the cohort.