Preoperative geriatric nutritional risk index predicts prognosis and postoperative complications in elderly patients undergoing non-cardiac surgery: a retrospective cohort study

Table 4 Multivariable analysis of postoperative complications

Factor	OR	95% CI	P-value
Heart injury:
Age (per year increase)	1.066	1.052–1.081	< 0.001
Coronary heart disease	1.658	1.377–1.989	< 0.001
Malignant tumor	1.570	1.279–1.935	< 0.001
GNRI ≤ 98	1.274	1.089–1.489	0.002
AKI:
Renal dysfunction	2.637	1.881–3.643	< 0.001
Blood glucose (per mmol/L increase)	1.051	1.021–1.08	< 0.001
Emergency operation	1.627	1.165–2.242	0.004
NSAIDS	1.836	1.537–2.208	< 0.001
GNRI ≤ 98	1.194	1.043–1.367	0.01
Pulmonary infection:
Current Smoking	1.164	1.051–1.287	0.003
COPD	1.301	1.048–1.604	0.015
Intra-abdominal surgery	2.289	1.761–3.008	< 0.001
Duration of procedures (per min increase)	1.005	1.004–1.005	< 0.001
GNRI ≤ 98	1.203	1.117–1.296	< 0.001
Surgical site infection:
Blood glucose (per mmol/L increase)	1.052	1.021–1.081	0.001
NSAIDS	1.357	1.149–1.610	< 0.001
GNRI ≤ 98	1.323	1.149–1.523	< 0.001
ICU admission
Age (per year increase)	1.075	1.066–1.085	< 0.001
ASA III	1.914	1.238–3.046	0.005
Emergency operation	4.382	3.394–5.649	< 0.001
Blood transfusion	1.228	1.076-1.400	0.002
GNRI ≤ 98	1.269	1.158–1.390	< 0.001
ICU length of stay:
Female sex	1.198	1.110–1.293	< 0.001
Anticoagulants	1.186	1.035–1.358	0.014
GNRI ≤ 98	1.132	1.049–1.222	0.001
Postoperative length of stay:
Diabetes mellitus	1.654	1.313–2.083	< 0.001
Malignant tumor	4.006	3.061–5.241	< 0.001
Blood transfusion	1.798	1.283–2.519	0.001
Opioid dose (per mg increase)	1.008	1.006–1.011	< 0.001
GNRI ≤ 98	1.677	1.332–2.111	< 0.001

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