Table 4

Comparison of bedside nurse and researcher (RA-1) delirium ratings at Time 2

T2 (N = 151)


RA-1 rating1


Nurse rating

Delirium

No delirium


Delirium

20

6

No delirium

87

38

Sensitivity2 [95% CI] : 18.7% [11.8–27.4]

Specificity3 [95% CI] : 86.4% [72.6–94.8]

Positive predictive value4 [95% CI] : 76.9% [56.4–91.0]

Negative predictive value5 [95% CI] : 30.4% [22.5–39.3]


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.

Voyer et al. BMC Nursing 2008 7:4   doi:10.1186/1472-6955-7-4

Open Data