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Table 1 Characteristics of the studied population according to the Geriatric Nutritional Risk Index (GNRI)

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

Characteristic

Total

High Risk < 92 (n = 45)

Low Risk 92–98 (n = 85)

No Risk > 98 (n = 158)

P-value a

Age (years), median (IQR)

74 (72–78)

75 (73–79)

75 (72–78)

74 (71–77)

0.086

Male gender, n (%)

148 (51.4)

24 (53.3)

36 (42.4)

88(55.7)

0.134

Preoperative pain, n (%)

169 (58.7)

26 (57.8)

56 (65.9)

87 (55.1)

0.261

Depression, n (%)

19 (6.6)

4 (8.9)

5 (5.9)

10 (6.3)

0.79

CCI, n (%)

 Mild (≤2)

214 (74.3)

34 (75.6)

58 (68.2)

122 (77.2)

 

 Moderate (3, 4)

52 (18.1)

7 (15.6)

21 (24.7)

24 (15.2)

0.546

 Severe (≥5)

22 (7.6)

4 (8.9)

6 (7.1)

12 (7.6)

 

GNRI score, mean ± SD

98.98 ± 8.46

85.09 ± 5.45 b

95.12 ± 2.17 b

105.01 ± 4.49 b

<0.001

MNA-SF score, med (IQR)

12 (9–13)

9 (7–11)

10 (8–12)

12 (11–14)

<0.001

Barthel Index, median (IQR)

100 (90–100)

95 (72–100)

100 (87–100)

100 (95–100)

0.010

Postoperative delirium, n (%)

49 (17.0)

14 (31.1)

11 (12.9)

24 (15.2)

0.021

Length of stay, med (IQR)

14 (21–10)

17 (12–21)

17 (12–23)

13 (9–18)

<0.001

  1. BMI body mass index, CCI Charlson Comorbidity Index, MNA-SF Mini Nutritional Assessment-Short Form.
  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