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Table 2 IDR studies: sample sizes and main results

From: Early childhood caries trends and surveillance shortcomings in the Czech Republic

 

1998

2001

2005

2010

Total number of study subjects

435

297

285

583

Overall response rate (%)

84.9

69.1

73.8

80.2

Mean dmft per child

3.7

3.3

2.8

2.9

SE

0.25

0.21

0.22

0.20

Mean dt per child

2.5

2.3

2.0

2.2

SE

0.19

0.18

0.19

0.15

% of children with dmft =0

26.7

31.30

51.2

44.9