Table 4 |
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Comparison of bedside nurse and researcher (RA-1) delirium ratings at Time 2 |
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T2 (N = 151) |
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RA-1 rating1 |
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Nurse rating |
Delirium |
No delirium |
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Delirium |
20 |
6 |
|
No delirium |
87 |
38 |
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Sensitivity2 [95% CI] : 18.7% [11.8–27.4] |
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Specificity3 [95% CI] : 86.4% [72.6–94.8] |
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Positive predictive value4 [95% CI] : 76.9% [56.4–91.0] |
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Negative predictive value5 [95% CI] : 30.4% [22.5–39.3] |
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1 Research assistant rating of probable delirium, assessed with the CAM, was used as the reference standard. 2 Indicates how often nurses detected delirium when it was present (true positive rate). 3 Indicates how often nurses rated delirium as absent when it was not present (true-negative rate). 4 Indicates how often delirium was present when delirium was detected by nurses. 5 Indicates how often delirium was absent when delirium was not detected by nurses. |
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Voyer et al. BMC Nursing 2008 7:4 doi:10.1186/1472-6955-7-4 |
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