Table 2.

Postoperative mortality of elderly patients undergoing hip hemiarthroplasty

	Total	7-days		30-days		180-days		1-year
	N	%	P	%	P	%	P	%	P
All	25,862	0.6		3.1		11.2		17.3
Fixation method			0.001		< 0.001		0.003		0.005
Cemented	12,364	0.7		3.5		11.8		18.0
Uncemented	13,498	0.4		2.7		10.7		16.7
Gender			0.013		< 0.001		< 0.001		< 0.001
Male	9,123	0.7		4.2		15.2		23.3
Female	16,739	0.5		2.5		9.1		14.1
Age Group			0.002		< 0.001		< 0.001		< 0.001
80–84 years	12,284	0.4		2.2		8.8		14.2
85–89 years	8,950	0.7		3.3		11.9		18.1
≥ 90 years	4,628	0.8		4.9		16.2		24.1
Insurance status			0.468		0.054		0.220		0.066
≥ US $840	14,509	0.6		3.3		11.4		17.7
< US $840	11,353	0.5		2.9		10.9		16.8
CCI score			0.229		< 0.001		< 0.001		< 0.001
CCI = 0	5,557	0.5		2.2		12.2		18.7
CCI ≥ 1	20,305	0.6		3.3		15.2		23.3
Type of head			0.131		0.417		0.365		0.033
UHA	11,265	0.7		3.2		11.4		17.9
BHA	14,597	0.5		3.0		11.1		16.9
Hospital type			0.842		0.584		0.328		0.022
Public	9,226	0.6		3.2		11.5		18.0
Private	16,636	0.6		3.1		11.1		16.9
Hospital level			0.964		0.213		0.003		0.004
Medical centre	7,679	0.6		2.9		10.3		16.3
Non-medical centre	18,183	0.6		3.2		11.6		17.7
Hospital volume			0.428		0.184		< 0.001		< 0.001
High (> 120)	10,367	0.5		2.9		10.2		16.0
Low (≤120)	15,495	0.6		3.2		11.9		18.2
Surgeon volume			0.360		0.015		< 0.001		< 0.001
High (> 21)	9,258	0.5		2.7		10.2		15.6
Low (≤21)	16,604	0.6		3.3		11.8		18.3

Note: Distribution among groups was analysed by the log-rank test