Does post acute care reduce the mortality of octogenarian and nonagenarian patients undergoing hip fracture surgery?

Table 8 Cox proportional-hazards regression analysis of mortality

Characteristic			Dead		Bivariable analysis (crude)			Multivariable analysis (adjusted)
Characteristic		Total	N	%	HR	95% CI	P-value	HR	95% CI	P-value
Gender	Female	108	12	11.1	1.00
Gender	Male	50	11	22.0	2.15	0.95–4.87	0.067
Hematologic disease	No	154	19	12.3	1.00
Hematologic disease	Yes	4	4	100	23.2	7.21–74.67	< 0.001
Cancer history	No	143	15	10.5	1.00			1.00
Cancer history	Yes	15	8	53.3	6.23	2.64–14.72	< 0.001	13.71	3.86–48.71	< 0.001
PAC	No	81	14	17.3	1.00
PAC	Yes	77	9	11.7	0.64	0.28–1.49	0.303
OP method	Cannulated screw	14	1	7.1	1.00
	Hemiarthroplasty	48	9	18.8	2.84	0.36–22.39	0.323
	Short CM nail	56	10	17.9	2.63	0.34–20.52	0.357
	Long CM nail	35	1	2.9	0.39	0.02–6.25	0.507
	DHS	5	2	40.0	6.97	0.63–76.95	0.113
Complicated with pneumonia during hospitalization	No	145	18	12.4	1.00
Complicated with pneumonia during hospitalization	Yes	13	5	38.5	3.72	1.38–10.04	0.009
Complicated with septic shock during hospitalization	No	155	20	12.9	1.00			1.00
Complicated with septic shock during hospitalization	Yes	3	3	100	25.9	7.14–94.01	< 0.001	103.02	20.34–521.75	< 0.001
Received Tx of osteoporosis after OP	No	70	17	24.3	1.00			1.00
Received Tx of osteoporosis after OP	Yes	88	6	6.8	0.24	0.10–0.62	0.003	0.26	0.10–0.71	0.008
Re-admission	No	88	8	9.1	1.00			1.00
Re-admission	Yes	70	15	21.4	2.38	1.00–5.59	0.049	3.30	1.18–9.26	0.023
Re-admission due to pneumonia	No	145	16	11.0	1.00
Re-admission due to pneumonia	Yes	13	7	53.8	5.93	2.43–14.48	< 0.001

Abbreviations: PAC post-acute care, DHS dynamic hip screw, Tx treatment, OP operation, CM cephalomedullary

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