Table 2.
Odds ratios and 95% confidence intervals for outcomes of Montreal Cognitive Assessment <26, Montreal Cognitive Assessment <20 and Delirium for anemic patients compared with patients with no anemia by age in the Older Persons Surgical Collaboration 2013–2014
| Age (years) | Outcomes | Anemia (n) | No anemia (n) | Crude OR (95% CI) | P‐value | aOR1 (95% CI) | P‐value | aOR2 (95% CI) | P‐value |
|---|---|---|---|---|---|---|---|---|---|
| MoCA | |||||||||
| ≥65 | <26 | 203 | 216 | 1.24 (0.84–1.83) | 0.27 | 1.16 (0.77–1.73) | 0.48 | 0.95 (0.56–1.61) | 0.85 |
| ≥26 | 59 | 78 | Reference | Reference | Reference | ||||
| ≥75 | <26 | 130 | 122 | 1.28 (0.67–2.43) | 0.45 | 1.32 (0.69–2.52) | 0.40 | 1.11 (0.50–2.50) | 0.80 |
| ≥26 | 20 | 24 | Reference | Reference | Reference | ||||
| ≥65 | <20 | 90 | 100 | 1.02 (0.71–1.44) | 0.93 | 1.02 (0.71–1.44) | 0.93 | 1.00 (0.61–1.64) | 0.99 |
| ≥20 | 172 | 194 | Reference | Reference | Reference | ||||
| ≥75 | <20 | 63 | 65 | 0.90 (0.57–1.43) | 0.66 | 0.89 (0.56–1.42) | 0.64 | 1.02 (0.53–1.97) | 0.95 |
| ≥20 | 87 | 81 | Reference | Reference | Reference | ||||
| Delirium | |||||||||
| ≥65 | Delirious | 18 | 18 | 1.28 (0.64–2.54) | 0.48 | 0.28 (0.64–2.54) | 0.48 | 1.00 (0.48–2.10) | 0.98 |
| Not delirious | 161 | 206 | Reference | Reference | Reference | ||||
| ≥75 | Delirious | 16 | 11 | 1.43 (0.63–3.23) | 0.40 | 1.18 (0.58–2.38) | 0.65 | 1.22 (0.49–3.01) | 0.67 |
| Not delirious | 100 | 98 | Reference | Reference | Reference | ||||
Adjusted odds ratios (aOR)1 are adjusted for age and sex.
aOR2, Covariates for Montreal Cognitive Assessment (MoCA) outcomes are: age, sex, polypharmacy, multimorbidity, frailty and diabetes mellitus.
Covariates for delirium outcome are: age, sex, polypharmacy, multimorbidity, frailty and hyperglycemia.