BMC Health Services Research

Table 3 Results of multivariate analysis of risk factors for falls.

From: World Health Organization fracture risk assessment tool in the assessment of fractures after falls in hospital

A
Datasets	Items	Estimated coefficient (β)	Standard error for β	Sig.	OR	95% CI for OR
Development dataset	History of falls	0.919	0.169	<0.001	2.507	1.801 - 3.489
	Gait instability	0.451	0.153	0.003	1.571	1.164 - 2.119
	Agitated confusion	0.698	0.180	<0.001	2.009	1.412 - 2.859
	Lower limb weakness	0.444	0.143	0.002	1.559	1.178 - 2.063
	STRATIFY score	0.335	0.072	<0.001	1.397	1.214 - 1.609
	Constant	-4.341	0.110	<0.001	0.013
Test dataset	History of falls	0.759	0.155	<0.001	2.137	1.577 - 2.897
	Gait instability	0.526	0.145	<0.001	1.692	1.275 - 2.247
	Lower limb weakness	0.332	0.137	0.015	1.394	1.066 - 1.824
	STRATIFY score	0.550	0.058	<0.001	1.734	1.547 - 1.944
	Constant	-4.420	0.109	<0.001	0.012
B
Datasets	Items	Estimated coefficient (β)	Standard error for β	Sig.	HR	95% CI for HR
Development dataset	History of falls	0.945	0.158	<0.001	2.572	1.888 - 3.505
	Gait instability	0.470	0.139	0.001	1.599	1.217 - 2.102
	Agitated confusion	0.475	0.167	0.005	1.609	1.158 - 2.233
	Lower limb weakness	0.273	0.136	0.045	1.313	1.006 - 1.714
	STRATIFY score	0.265	0.069	<0.001	1.303	1.139 - 1.492
Test dataset	History of falls	0.677	0.147	<0.001	1.968	1.475 - 2.627
	Gait instability	0.606	0.128	<0.001	1.834	1.428 - 2.354
	STRATIFY score	0.469	0.052	<0.001	1.598	1.442 - 1.770

Risk factors shown in Table 1 were analyzed by multiple logistic regression analysis (A) and multivariate Cox's regression analysis in development and test datasets (B). Significant factors were selected by using the stepwise selection method. CI, confidence interval; LOS, length of hospital stay; OR, odds ratio; HR, hazards ratio.

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