Research Article
[Retracted] Development and Validation of a Postoperative Delirium Prediction Model for Elderly Orthopedic Patients in the Intensive Care Unit
Table 1
The demographic characteristics and clinical variables of the development and validation cohorts.
| | | Development cohort | Validation cohort |
| | Patients (n) | 319 | 108 | | Male sex (n) (%) | 206 (64.6) | 65 (60.2) | | Age (years) (mean ± SD) | 83.1 ± 7.9 | 80.1 ± 8.4 | | BMI (kg/m2) (mean ± SD) | 23.3 ± 3.0 | 23.5 ± 2.8 | | Urgent admission (n) (%) | 110 (34.5) | 31 (28.7) | | MMSE (mean ± SD) | 20.1 ± 4.2 | 20.5 ± 4.1 | | Charlson comorbidity index (mean ± SD) | 7.4 ± 3.1 | 8.4 ± 3.4 | | Duration of surgery (min) (mean ± SD) | 148.0 ± 52.4 | 110.4 ± 36.7 | | Regional anesthesia (n) (%) | 166 (52) | 58 (53.7) | | Hypotension during surgery (n) (%) | 85 (26.6) | 17 (15.7) | | Hypoxia during surgery (n) (%) | 42 (13.2) | 15 (13.9) | | Major hemorrhage (n) (%) | 109 (34.2) | 37 (34.3) | | Level of IL-6 >9pg/ml (n) (%) | 112 (35.1) | 45 (41.7) | | Company of family member (n) (%) | 109 (34.2) | 43 (39.8) |
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BMI denotes body mass index, MMSE denotes mini-mental state examination, SD denotes standard deviation, and IL-6 denotes interleukin-6.
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