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Table 2 Characteristics of the studied population according to the Mini-Nutritional Assessment Short Form (MNA-SF)

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

CharacteristicMalnourished ≤ 7 (n = 41)At risk 8–11 (n = 98)Well nourished 12–14 (n = 149)P-valuea
Age (years), median (IQR)76 (73–78)75.5 (72–78)73 (71–77)0.078
Male gender, n (%)22 (53.7)49 (50.0)77 (51.7)0.921
Preoperative pain, n (%)30 (24.1)59 (60.2)80 (53.7)0.075
BMI (kg/m2), mean ± SD19.45 ± 2.55 b21.42 ± 3.07 b23.70 ± 2.88 b<0.001
Albumin (g/L), mean ± SD36.93 ± 5.13 b39.79 ± 4.73 b41.21 ± 4.48 b<0.001
MNA-SF score, med (IQR)6 (5–7) b10 (9–11) b13 (12–14) b<0.001
Barthel Index, median (IQR)95 (77–100)100 (88–100)100 (95–100)0.010
Postoperative delirium, n (%)16 (39.0)20 (20.4)13 (8.7)0.004
Length of stay, med (IQR)19 (14–23)14 (10–19)14 (10–20)0.022
  1. BMI body mass index, CCI Charlson Comorbidity Index, GNRI Geriatric Nutritional Risk Index.
  2. Notes: ap values according to ANOVA, Kruskall-Wallis or Chi-square tests;
  3. b Significantly different from the other groups by post-hoc comparison