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Table 2 Univariate logistic regression analyses of potential risk factors for delirium

From: Incidence, predictors and health outcomes of delirium in very old hospitalized patients: a prospective cohort study

Variables

Unadjusted OR

95% CI

P-value

Age (90 ~ 99 y)

2.41

1.47–3.95

< 0.001**

Sex (Female)

1.14

0.72–1.80

0.571

Single/divorced /windowed

1.63

1.01–2.63

0.045*

High school or above

0.61

0.40–0.93

0.023*

Smoking

1.08

0.71–1.65

0.708

Alcohol use

1.51

0.94–2.44

0.088

Number of medications ≥ 5

7.99

5.09–12.54

< 0.001**

Emergency admission

4.64

2.81–7.68

< 0.001**

Vision impairment

1.29

0.72–2.31

0.383

Hearing impairment

1.14

0.67–1.94

0.618

Sleep deprivation

1.61

0.98–2.64

0.061

Pain

1.68

1.09–2.58

0.018*

Constipation

2.76

1.80–4.21

< 0.001**

Cognitive impairment

29.11

14.76–57.41

< 0.001**

ADL impairment

1.88

1.01–3.48

0.045*

Malnutrition

2.94

1.93–4.50

< 0.001**

Depression

12.25

7.58–19.79

< 0.001**

Infection

7.07

4.53–11.04

< 0.001**

CCI

 Mild(≤2)

Reference

  

 Moderate(3–4)

2.30

1.42–3.74

0.001*

 Severe(≥5)

5.29

2.66–10.54

< 0.001**

  1. Abbreviations: ADL Activity of Daily Life, CCI Charlson Comorbidity Index, OR odds ratio, 95% CI 95% confidence interval
  2. * P < 0.05; ** P < 0.001