Table 2.

Mean caries increments (Δ) over 3 years expressed as mean DFT and DFS in the various Cariogram risk categories

Risk group at baseline	n	ΔDFT (SD)	ΔDFS (SD)	ΔDFS = 0 (%)
81–100 (very low risk)	251	0.24 (0.58)	0.29 (0.89)	85.3
61–80	335	0.53 (1.07)	0.85 (1.91)	71.3
41–60	248	0.82 (1.18)	1.59 (2.55)	50.4
21–40	74	0.84 (0.95)	1.70 (1.76)	36.5
0–20 (very high risk)	74	1.00 (1.40)	1.99 (3.00)	44.6
ANOVA/Chi-square	p < 0.001	p < 0.001	p < 0.001	p < 0.001

Values in parenthesis denote the standard deviation.