Table 3 Comparison of accuracy parameters for the incidence of delirium between our delirium screening process and Martinez’s screening process

Number

259

275

Sensitivity

94.12 (71.31–99.85%)

100% (80.49–100.00%)

Specificity

72.73 (66.65–78.24%)

28.68% (23.21–34.62%)

Positive likelihood ratio

3.45 (2.72–4.38)

1.40 (1.30–1.51)

Negative likelihood ratio

0.08 (0.01–0.54)

0.00

Positive predictive value

19.51% (16.05–23.51%)

8.46% (7.88–9.08%)

Negative predictive value

99.44% (96.33–99.92%)

100%

Accuracy

74.13% (68.35–79.35%)

33.09% (27.56–38.99%)