Table 4.

The caries indices by age and grade.

	d/D1–3T	d/D1–3S	d/D4–6T	d/D4–6S	f/FT	f/FS	dmft/DMFT	Dmfs/DMFS
Age
7	3.7	4.6	2.2	4.0	3.9	6.4	5.9	12.0
8	3.8	5.1	1.8	3.3	4.2	6.7	6.0	11.9
9	4.3	5.7	1.5	2.2	4.3	7.2	5.7	11.4
Mean	3.8	5.0	1.9	3.4	4.1	6.7	5.9	11.9
P*	0.411	0.339	0.281	0.220	0.785	0.657	0.653	0.685
Grade
I	3.7	4.7	2.3	4.1	3.9	6.3	6.0	12.3
II	3.9	5.3	1.6	2.7	4.3	7.0	5.9	11.5
Mean	3.8	5.0	1.9	3.4	4.1	6.7	5.9	11.9
P*	0.565	0.374	0.053	0.101	0.150	0.112	0.403	0.304

*Kruskal-Wallis test.