Definitions of indicators in the 12-year-old survey results, 2008/09

Definitions of indicators in the 12-year-old survey results, 2008/09
Indicator Definition
SHA / GOR Strategic Health Authority / Government Office Region.
PCT Code / LA Code Primary Care Trust Code / Local Authority Code.
PCT Name / LA Name Primary Care Trust Name / Local Authority Name.
12-year-old Population
(Mid-2008) Estimated population of 12-year-old children mid 20081
.
Drawn Sample Total number of validated children approached to take part in the survey, selected in accordance with Pine et
al, (1997b).
Examined Total number of validated children actually examined.
% Examined Percentage of validated children from Drawn Sample actually examined.
D3 Obvious dental decay into the dentine of the tooth using visual methods of detection only.
Uppercase D3, M, F, T Refers to permanent dentition only.
Mean D3MFT Average number of obviously Decayed, Missing (due to decay) and Filled Teeth per child.
Mean D3T Average number of obviously Decayed Teeth per child.
Mean MT Average number of Missing (due to decay) Teeth per child.
Mean FT Average number of Filled Teeth per child.
% D3MFT > 0 Percentage of children with decay experience (ie: with one or more obviously Decayed, Missing (due to decay)
and Filled Teeth).
Mean D3MFT (% D3MFT > 0) For those children with decay experience, the average number of obviously Decayed, Missing (due to decay)
and Filled Teeth per child.
% D3T > 0 Percentage of children with current/active decay (ie: with one or more obviously Decayed Teeth).
Mean D3T (% D3T > 0) For those children with current/active decay, the average number of obviously Decayed Teeth per child.
Care Index % Proportion of teeth with decay experience which have been filled (FT/D3MFT percentage).
Confidence interval A statistical range with a specified probability that a given indicator lies within the range.
Confidence limit Specifies the endpoints of a confidence interval.
Lower D3MFT Lower 95% confidence limit for mean D3MFT.
Upper D3MFT Upper 95% confidence limit for mean D3MFT.
Lower D3T Lower 95% confidence limit for mean D3T.
Upper D3T Upper 95% confidence limit for mean D3T.
Lower MT Lower 95% confidence limit for mean MT.
Upper MT Upper 95% confidence limit for mean MT.
Lower FT Lower 95% confidence limit for mean FT.
Upper FT Upper 95% confidence limit for mean FT.
Lower % D3MFT > 0 Lower 95% confidence limit for % D3MFT > 0.
Upper % D3MFT > 0 Upper 95% confidence limit for % D3MFT > 0.
Lower D3MFT > 0 (mean) Lower 95% confidence limit for mean D3MFT for those children with decay experience.
Upper D3MFT > 0 (mean) Upper 95% confidence limit for mean D3MFT for those children with decay experience.
Lower % D3T > 0 Lower 95% confidence limit for % D3T > 0.
Upper % D3T > 0 Upper 95% confidence limit for % D3T > 0.
Lower D3T > 0 (mean) Lower 95% confidence limit for mean D3T for those children with current/active decay.
Upper D3T > 0 (mean) Upper 95% confidence limit for mean D3T for those children with current/active decay.
Lower Care Index % Lower 95% confidence limit for Care Index %.
Upper Care Index % Upper 95% confidence limit for Care Index %.
1
Denominator Source: Office for National Statistics (ONS) 2008 Single Year of Age mid year estimates.
Reference: Pine, C.M., Pitts, N.B., Nugent, Z.J. (1997b) British Association for the Study of Community Dentistry (BASCD) guidance on sampling for surveys of
child dental health. A BASCD coordinated dental epidemiology programme quality standard. Community Dental Health: 14, (Supplement 1), 10-17.

Definitions of indicators in the 12-year-old survey results, 2008/09

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