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

From: Impact of a delirium prevention project among older hospitalized patients who underwent orthopedic surgery: a retrospective cohort study

Statistic Delirium screening process 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%)
  1. Data are presented as mean (95% confidential interval)