Effects of impairment in activities of daily living on predicting mortality following hip fracture surgery in studies using administrative healthcare databases

Table 5 Multivariable model of predictors of mortality within 360 days of hip fracture surgery

Variable	Wald chi square	D.F	P value	C statistic	Max rescaled R²
ADL score^a	26.46	4	<0.0001	0.578	0.0282
ADL score^b	21.79	1	<0.0001	0.578	0.0226
Age	9.42	2	0.008	0.544	0.01
Age, sex	28.1	3	<0.0001	0.580	0.03
Age, sex, LTC	37.00	4	<0.0001	0.597	0.04
Age, sex, LTC, Charlson	53.45	8	<0.0001	0.624	0.06
Age, sex, LTC, Charlson, ADGs	60.69	13	<0.0001	0.635	0.07
Age, sex, LTC, Charlson, ADGs, visits	60.9	14	<0.0001	0.634	0.07
Age, sex, LTC, Charlson, ADGs, visits, medical conditions	81.03	24	<0.0001	0.653	0.09
Age, sex, LTC, Charlson, ADGs, visits, medical conditions, ADL impairment^a	94.50	28	<0.0001	0.668	0.11
Age, sex, LTC, Charlson, ADG, visits, medical conditions, ADL impairment^b	92.13	25	<0.0001	0.67	0.10

ADL = activity of daily living; ADG = aggregated diagnosis groups; LTC = long-term care.
a = ADL impairment as categorical variable, b = ADL impairment as continuous variable.

ISSN: 1471-2318