highly significantP value <0.001
In plaque index, maximum number of subjects in all the age group were in the fair group, and there was a highly significant ( P value <0.001) association between the age group and the plaque index groups.
In plaque index, maximum number of subjects in all the age group were in the fair group, and there was a highly significant ( P value <0.001) association between the age group and the plaque index groups.