Table 2.

Effects of factors on 1-year mortality measured by univariate analysis.

	Statistics	OR (95% CI)	P
Age (y)	79.44±6.71	1.08 (1.06–1.11)	<0.01
Sex
Male	743 (31.47%)	1
Female	1618 (68.53%)	0.79 (0.59–1.06)	0.12
Injury mechanism
Low velocity trauma	2286 (96.82%)	1
High velocity trauma	61 (2.58%)	0.51 (0.16–1.65)	0.26
Unclear	14 (0.59%)	2.70 (0.75–9.74)	0.13
Fracture classification
Intertrochanteric fracture	1745 (73.91%)	1
Femoral neck fracture	616 (26.09%)	0.91 (0.66–1.26)	0.59
Hypertension	1154 (48.88%)	1.16 (0.88–1.54)	0.29
Diabetes	459 (19.44%)	1.24 (0.89–1.74)	0.21
CHD	1215 (51.46%)	1.33 (1.00–1.76)	0.05
Arrhythmia	757 (32.06%)	1.12 (0.83–1.50)	0.47
Hemorrhagic stroke	48 (2.03%)	1.43 (0.60–3.40)	0.42
Ischemic stroke	665 (28.17%)	1.19 (0.88–1.61)	0.26
Cancer	65 (2.75%)	1.84 (0.93–3.67)	0.08
Multiple injuries	163 (6.90%)	0.78 (0.42–1.42)	0.41
Dementia	89 (3.77%)	2.27 (1.30–3.98)	<0.01
COPD	137 (5.80%)	1.44 (0.85–2.45)	0.17
Hepatitis	70 (2.96%)	1.49 (0.73–3.03)	0.28
Gastritis	42 (1.78%)	0.76 (0.23–2.48)	0.65
aCCI	4.2±1.1	1.52 (1.34–1.73)	<0.01
Treatment strategy
CRIF/ORIF	1724 (73.02%)	1
HA	602 (25.50%)	1.01 (0.73–1.39)	0.95
THA	35 (1.48%)	0.29 (0.04–2.12)	0.22
TTA (h)	79.15±237.19	1.00 (1.00–1.00)	0.03
Time to operation (h)	102.96±61.68	1.05 (1.00–1.10)	0.04
Blood loss (ml)	241.32±153.49	1.00 (1.00–1.00)	0.50
Operation time (mins)	93.07±35.95	1.00 (1.00–1.00)	0.82
Infusion (ml)	1556.04±383.40	1.00 (1.00–1.00)	0.06
Stay in hospital (d)	8.69±3.38	1.04 (1.01–1.08)	0.02
Transferred
No	1124 (48.08%)	1.0
Yes	1214 (51.92%)	1.40 (1.06–1.87)	0.02
Geography
Suburban	1704 (72.88%)	1.0
Urban	634 (27.12%)	0.89 (0.65–1.23)	0.49
Insurance status
Residents medical insurance	1357 (58.04%)	1.0
Employee medical insurance	981 (41.96%)	0.91 (0.69–1.22)	0.54
Timing of injuries
Daytime	1870 (79.98%)	1.0
Night-time	468 (20.02%)	0.94 (0.66–1.34)	0.72