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Table 5 Frequency, incidence and incidence density ratio of caries affected children and teeth

From: Assessment of dental caries predictors in 6-year-old school children - results from 5-year retrospective cohort study

 

Observation period (5 Years)

n(Children)

1830

Number of new caries affected cases

464

Children-years of observation

7990

IDp/100 children at risk

5.80

n(teeth)

44829

Number of new caries affected teeth

1038

Teeth-years of observation

137099.7

IDt/100 teeth at risk

0.76

  1. IDp Incidence density for person.
  2. IDt Incidence density for teeth.