Table 4.

Logistic regression analysis examining independent risk factors for the odds ratio of returned to vs declined from pre-fracture level of ambulation at 12 months after operation

Effect	Odds ratio estimate	95% wald confidence limits		P-value
Age at baseline	0.941	0.874	1.014	0.111
Mini-mental state examination at baseline	0.971	0.820	1.151	0.737
Instrumental activities of daily living at baseline	1.414	0.988	2.023	0.058
BMI at baseline	0.978	0.883	1.084	0.673
Charlson comorbidity index at baseline	0.714	0.526	0.969	0.031
Education
Non-high school graduate vs college graduate or higher	0.486	0.087	2.705	0.091
High school graduate or equivalent vs college graduate or higher	1.560	0.355	6.847	0.257
Some college vs college graduate or higher	1.501	0.267	8.449	0.419
Lighter vs heavier sedation	0.774	0.306	1.957	0.589
Delirium in hospital, yes/no	0.318	0.104	0.966	0.043
Ambulation at baseline	13.783	5.196	36.561	<0.001