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Performance of SILS at a threshold of 2 (N = 999)* |
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| Characteristic |
Impaired†and Inadequate Reading Ability (S-TOFHLA < 16)‡ |
Impaired†and Limited Reading Ability (S-TOFHLA < 23)‡ |
|
|
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| Sensitivity (%) |
67 (58, 76) |
54 (47, 61) |
| Specificity (%) |
82 (80, 85) |
83 (81, 86) |
| Positive Predictive Power |
0.31 (0.25, 0.37) |
0.40 (0.34, 0.47) |
| Negative Predictive Power |
0.96 (0.94, 0.97) |
0.90 (0.88, 0.92) |
| Likelihood Ratio Positive (LR +) |
3.79 (3.12, 4.6) |
3.28 (2.67, 4.03) |
| Likelihood Ratio Negative (LR -) |
0.40 (0.30, 0.53) |
0.55 (0.47, 0.65) |
| Area under the ROC curve |
0.78 (0.73,0.83) |
0.73 (0.69, 0.78) |
|
**Main analysis is based on S-TOFHLA < 23. †Impaired = Low vision or physically unable to complete the S-TOFHLA. ‡Results are point estimates and 95% confidence intervals. | ||
Morris et al. BMC Family Practice 2006 7:21 doi:10.1186/1471-2296-7-21 |
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