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Table 3 Univariate and multivariate analyses of factors associated with delirium

From: “Delirium Day”: a nationwide point prevalence study of delirium in older hospitalized patients using an easy standardized diagnostic tool

   Univariate analysis Multivariate analysis
  Number OR 95 % CI p value OR 95 % CI p value
Age   1.07 1.05–1.09 <.001 1.03 1.01–1.05 .006
Female sex 180/785 .99 .80–1.24 .97 -- -- --
Education, years   .96 .93–.99 .008 1.00 .97–1.04 .77
Rehabilitation wards 35/250 Ref    Ref   
Geriatrics wards 285/1154 2.02 1.38–2.95 <.001 1.15 .72–1.83 .56
Orthopedic surgery wards 22/107 1.59 .88–2.87 0.12 -- -- --
Neurology wards 45/158 2.45 1.49–4.02 <.001 2.00 1.10–3.64 .02
Internal Medicine wards 42/198 1.65 1.01–2.71 .05 1.40 .77–2.57 .27
ADL (functions lost)   1.45 1.38–1.53 <.001 1.19 1.12–1.27 <.001
Dementia (yes/no) 243/465 7.16 5.64–9.08 <.001 3.25 2.41–4.38 <.001
Malnutrition (yes/no) 58/133 2.84 1.98–4.08 <.001 2.01 1.29–3.14 .002
Antihypertensives (yes/no) 241/1180 .68 .55–.85 .001 .84 .64–1.09 .18
Statins/lipid lowering (yes/no) 45/342 .45 0.32–0.63 <.001 .79 .53–1.17 .23
Antibiotics (yes/no) 186/619 1.78 1.42–2.22 <.001 1.24 0.93–1.64 .14
Antipsychotics (yes/no) 132/263 4.43 3.38–5.82 <.001 2.03 1.45–2.82 <.001
Antidepressants (yes/no) 112/390 1.47 1.15–1.90 .003 1.03 .76–1.41 .83
Antiulcer drugs (yes/no) 270/1250 .79 .63–.99 .04 .86 .65–1.13 .27
AChE-I/memantine (yes/no) 15/39 2.14 1.11–4.11 .03 .91 .42–1.97 .81
Feeding tubes (NT or PEG) (yes/no) 20/40 3.47 1.85–6.51 <.001 2.51 1.11–5.66 .03
Peripheral venous catheters (yes/no) 244/848 1.82 1.47–2.27 <.001 1.41 1.06–1.87 .02
Urinary catheters (yes/no) 199/539 2.79 2.23–3.50 <.001 1.73 1.30–2.29 <.001
Physical restraints (yes/no) 268/695 3.94 3.15–4.94 <.001 1.84 1.40–2.40 <.001
  1. OR odds ratio, 95 % CI 95 % confidence interval, Ref reference value for the hospital wards, ADL Activities of Daily Living score, AChE-I acetylcholinesterase inhibitors, NT nasogastric tube, PEG percutaneous endoscopic gastrostomy