Preoperative Risk Factors for Postoperative Delirium (Cleveland Clinic Acute Confusion Score, CCC)

Parameters:

(1) age

(2) history of delirium

(3) history of pre-existing cognitive impairment

(4) history of health being affected by alcohol (measured using the CAGE questionnaire)

(5) preoperative use of narcotic analgesics

(6) hospital service admitted to

total score =

= SUM(points for all 6 parameters)

Interpretation:

• minimum score: 0

• maximum score: 7

• A score >= 2 was used to identify a patient at risk for postoperative delirium.

Performance:

• The sensitivity at the >= 2 cutoff was 74% with specificity of 74%. The positive predictive value was 27% with a negative predictive value of 96%.

• The sensitivity at the >= 3 cutoff was 33% with specificity of 93%.