Table 1 Prognostic factors for postoperative complications among older adults undergoing elective surgery
Prognostic factor | Number of studies | Number of patients | Odds ratio (95% CI) | Heterogeneity (I2) |
|---|---|---|---|---|
Poor performance status | 5 | 889 | 2.58 (1.56–4.25) | 0 |
Smoking status | 3 | 907 | 2.43 (1.32–4.46) | 0 |
IADL impairment | 7 | 1036 | 2.27 (1.65–3.14) | 0 |
Frailty | 8 | 1527 | 2.16 (1.29–3.62) | 54.69 |
Cognitive impairment | 8 | 1851 | 2.01 (1.44–2.81) | 0 |
ADL impairment | 4 | 829 | 1.98 (1.31–2.99) | 0 |
Geriatric depression screen | 4 | 777 | 1.77 (1.22–2.56) | 0 |
Comorbidity score | 5 | 1000 | 1.55 (1.29–1.87) | 0 |
Depression | 2 | 257 | 2.04 (0.67–6.23) | 0 |
Poor mobility | 2 | 477 | 2.51 (0.92–6.84) | 63.37 |
Older age | 9 | 2917 | 1.07 (1.00–1.14) | 17.96 |
General anesthesia | 2 | 172 | 0.78 (0.38–1.59) | 0 |
ASA score ≥ 3 | 3 | 420 | 2.62 (0.78–8.79) | 0 |
Malnutrition | 7 | 847 | 1.22 (0.66–2.24) | 31.02 |
Hypertension | 3 | 912 | 0.90 (0.52–1.54) | 0 |
Cerebrovascular disease | 2 | 845 | 0.81 (0.11–5.94) | 83.39 |
Diabetes mellitus | 3 | 912 | 0.70 (0.39–1.26) | 0 |
Polypharmacy | 4 | 442 | 1.46 (0.9–2.37) | 0 |
Male sex | 6 | 2141 | 1.60 (0.88–2.91) | 66.24 |