Table 5
Sensitivity and specificity values for self-reported and corrected data, by sex, household population aged 18 to 79, Canada, 2008
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Self-reported | Corrected | ||||||||
---|---|---|---|---|---|---|---|---|---|
Based on 2007 to 2009 Canadian Health Measures Survey | Based on 2005 Canadian Community Health Survey | ||||||||
% | 95% confidence interval | % | 95% confidence interval | % | 95% confidence interval | ||||
from | to | from | to | from | to | ||||
Sensitivity (% true positives) | |||||||||
Men | |||||||||
Underweight | 58.7 | 29.0 | 83.1 | 58.7 | 29.0 | 83.1 | 58.7 | 29.0 | 83.1 |
Normal weight | 90.6 | 85.5 | 94.0 | 84.9* | 79.7 | 89.0 | 83.5* | 77.9 | 87.8 |
Overweight | 69.7 | 65.2 | 73.8 | 80.0* | 75.8 | 83.7 | 78.4* | 73.8 | 82.4 |
Obese | 67.4 | 61.1 | 73.1 | 77.4* | 71.8 | 82.1 | 83.7* | 78.8 | 87.6 |
Women | |||||||||
Underweight | 73.0 | 58.0 | 84.2 | 55.2* | 38.3 | 71.1 | 26.4* | 14.6 | 43.0 |
Normal weight | 93.6 | 90.8 | 95.6 | 89.8* | 86.2 | 92.5 | 85.4* | 81.4 | 88.7 |
Overweight | 68.4 | 63.4 | 73.1 | 79.0* | 74.5 | 83.0 | 77.6* | 73.1 | 81.6 |
Obese | 65.2 | 58.4 | 71.5 | 75.4* | 69.1 | 80.8 | 81.5* | 74.9 | 86.6 |
Specificity (% true negatives) | |||||||||
Men | |||||||||
Underweight | 99.7 | 99.2 | 99.9 | 99.8 | 99.3 | 99.9 | 99.8 | 99.3 | 99.9 |
Normal weight | 81.6 | 78.6 | 84.3 | 89.4* | 86.8 | 91.5 | 90.2* | 87.6 | 92.3 |
Overweight | 81.5 | 77.6 | 84.8 | 82.6 | 79.0 | 85.7 | 84.7* | 81.2 | 87.6 |
Obese | 98.8 | 97.5 | 99.4 | 97.5* | 96.0 | 98.5 | 95.8* | 93.9 | 97.2 |
Women | |||||||||
Underweight | 97.8 | 96.6 | 98.6 | 98.5* | 97.2 | 99.2 | 98.8* | 97.5 | 99.4 |
Normal weight | 81.6 | 78.7 | 84.3 | 89.0* | 86.5 | 91.1 | 90.3* | 87.9 | 92.3 |
Overweight | 88.4 | 85.4 | 90.9 | 88.0 | 85.0 | 90.5 | 87.0 | 83.9 | 89.5 |
Obese | 98.8 | 98.0 | 99.3 | 97.6* | 96.0 | 98.5 | 95.0* | 93.3 | 96.3 |
* significantly different from self-reported estimate (p < 0.05) Source: 2008 Canadian Community Health Survey (subsample). |
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