Table 3.
Multivariate logistic regression analyses for the occurrence of delirium.
| Univariate | Model 1 | Model 2 | Model 3 | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| OR | 95%CI | p | OR | 95%CI | p | OR | 95%CI | p | OR | 95%CI | p | |
| DGLA, 1 increase | 0.92 | 0.90 –0.96 | <0.001 | 0.93 | 0.90–0.97 | <0.001 | 0.94 | 0.90–0.97 | 0.001 | 0.95 | 0.91–0.99 | 0.009 |
| DGLA as a categorical variable | ||||||||||||
| 1st quartile | 1.00 | reference | 1.00 | reference | 1.00 | reference | 1.00 | reference | ||||
| 2nd quartile | 0.30 | 0.14 –0.62 | 0.001 | 0.33 | 0.15 –0.70 | 0.004 | 0.30 | 0.13 –0.69 | 0.005 | 0.35 | 0.15 –0.83 | 0.02 |
| 3rd quartile | 0.22 | 0.10 –0.49 | <0.001 | 0.23 | 0.10 –0.55 | <0.001 | 0.20 | 0.08 –0.52 | 0.001 | 0.26 | 0.09 –0.70 | 0.008 |
| 4th quartile | 0.13 | 0.05–0.35 | <0.001 | 0.20 | 0.07–0.57 | 0.003 | 0.21 | 0.07 –0.62 | 0.005 | 0.22 | 0.06 –0.79 | 0.02 |
| AA/DGLA, 1 increase | 1.33 | 1.18–1.50 | <0.001 | 1.29 | 1.14–1.47 | <0.001 | 1.30 | 1.13–1.49 | <0.001 | 1.28 | 1.11–1.48 | <0.001 |
| AA/DGLA as a categorical variable | ||||||||||||
| 1st quartile | 1.00 | reference | 1.00 | reference | 1.00 | reference | 1.00 | reference | ||||
| 2nd quartile | 2.28 | 0.77–6.73 | 0.14 | 1.62 | 0.53–4.95 | 0.40 | 1.78 | 0.56–5.70 | 0.33 | 2.20 | 0.62–7.80 | 0.22 |
| 3rd quartile | 2.52 | 0.87–7.36 | 0.09 | 1.51 | 0.50–4.59 | 0.46 | 1.27 | 0.39–4.08 | 0.69 | 1.32 | 0.36–4.78 | 0.67 |
| 4th quartile | 6.34 | 2.37 –17.0 | <0.001 | 3.90 | 1.40–10.9 | 0.009 | 3.64 | 1.24–10.7 | 0.02 | 3.74 | 1.12–12.5 | 0.03 |
Model 1 was adjusted for age, sex, and BMI; Model 2 was adjusted for Model 1 and presence of ADHF and dementia; and Model 3 was adjusted for Model 2 and inflammation (C-reactive protein levels), renal dysfunction (creatinine levels), and malnutrition (albumin levels), OR, odds ratio; 95%CI, 95% confidence interval. The bold means statistically significant values. DGLA, dihomo-gamma-linolenic acid; AA, arachidonic acid.