Table 1.

Preoperative characteristics of patients

	Conventional (36 subjects)	MIO (32 subjects)	Average difference (95 % CI)	p Value
Age (years)	84.7 ± 7.20	82.78 ± 7.71	1.91 (−1.69 to 5.52)	0.2938
Type of fracture	1.89 ± 0.67	2.00 ± 0.57	−0.11 (−0.41 to 0.19)	0.4650
Time from hospitalization to surgery (h)	57.58 ± 28.04	56.97 ± 52.76	0.61 (−19.53 to 20.76)	0.9516
Anticoagulant/antiplateleta	0.47 ± 0.51	0.37 ± 0.49	0.09 (−0.14 to 0.34)	0.4260
Number of comorbidities	2.33 ± 1.35	2.56 ± 1.24	−0.23 (−0.86 to 0.40)	0.4713

There are no significant differences between the two groups (Student t test)

^aOne patient used oral anticoagulants (coumarin) and 12 used oral antiplatelet drugs in the MIO group. Two patients used oral anticoagulants and 17 used oral antiplatelet drugs in the DHS conv group