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Table 3 Multivariable logistic regression and linear regression analyses for the occurrence of postoperative delirium and length of stay

From: The geriatric nutrition risk index versus the mini-nutritional assessment short form in predicting postoperative delirium and hospital length of stay among older non-cardiac surgical patients: a prospective cohort study

 Postoperative deliriumLength of stay
Adjusted OR (95% CI)aP-valueβ (95% CI)bP-value
GNRI categoriesc
 No risk (>98)Reference Reference 
 Low risk (92–98)0.61 (0.26–1.43)0.2554.91 (2.43–7.39)< 0.001
High risk (<92)2.22 (0.92–5.37)0.0774.10 (0.95–7.25)0.011
GNRI scoresd0.96 (0.92–1.00)0.077−0.24 (−0.37 to − 0.11)< 0.001
MNA-SF categoriesc
 Well nourished (12–14)Reference Reference 
 At risk (8–11)1.95 (0.86–4.39)0.1090.87 (−1.55 to 3.29)0.48
 Malnourished (≤7)4.06 (1.62–10.18)0.0034.23 (0.91–7.54)0.013
MNA-SF scoresd0.82 (0.72–0.92)0.001−0.52 (− 0.93 to − 0.11)0.014
  1. OR odds ratio, CI confidence interval, GNRI Geriatric Nutritional Risk Index, MNA-SF Mini-Nutritional Assessment Short Form, CCI Charlson Comorbidity Index.
  2. Notes: a Adjusted for age, sex, CCI, depression, Barthel Index and preoperative pain in multivariable logistic regression model;
  3. b Adjusted for age, sex, Barthel Index and preoperative pain in linear regression model;
  4. c Modeled as categories variables;
  5. d Modeled as continuous variables