Table 3.

Univariate and multivariate predictors of immediate and delayed delirium after femur neck fracture

Variables	Univariate analysis		Multivariate analysis
	OR (95% CI)	p-value	OR (95% CI)	p-value
Overall population
Age (per 10 years)	1.44 (1.04–2.01)	0.028
Dementia	2.18 (1.15–4.12)	<0.001	2.18 (1.13–4.21)	0.021
Parkinsonism	4.28 (1.44–14.21)	<0.001	3.68 (1.18–11.48)	0.025
ASA grade	2.08 (1.15–3.94)	0.001	1.93 (0.99–3.75)	0.052
General anesthesia	1.91 (1.20–3.23)	<0.001	1.57 (0.93–2.64)	0.089
Days from injury to operation	0.98 (0.94–1.00)	0.074	0.97 (0.95–1.00)	0.054
ICU care	1.61 (1.01–2.55)	0.045
For immediate delirium
Age (per 10 years)	1.47 (0.98–2.24)	0.067	1.47 (0.98–2.23)	0.066
Dementia	2.36 (1.07–4.98)	0.027
Parkinsonism	2.57 (0.51–10.79)	0.205
ASA grade	1.56 (0.78–3.36)	0.229
General anesthesia	2.24 (1.19–4.43)	0.015	2.25 (1.17–4.33)	0.015
Days from injury to operation	0.98 (0.93–1.00)	0.176
ICU care	1.19 (0.65–2.15)	0.567
For delayed delirium
Age (per 10 years)	1.38 (0.90–2.12)	0.139
Dementia	1.98 (0.86–4.56)	0.108
Parkinsonism	6.40 (1.87–21.87)	0.003	5.75 (1.66–19.96)	0.006
ASA grade	2.86 (1.20–6.83)	0.018	2.33 (0.90–6.07)	0.083
General anesthesia	1.67 (0.87–3.21)	0.123
Days from injury to operation	0.98 (0.94–1.01)	0.205
ICU care	2.24 (1.22–4.13)	0.010	1.85 (0.97–3.56)	0.064

Note: p-values in bold indicate statistical significance.

Abbreviations: ASA, American Society of Anesthesiologists; CI, confidence interval; ICU, intensive care unit; OR, odds ratio.