Table 1 General comparison between the two groups

Cases

52

50

Age (years)

78.00 ± 6.95

80.04 ± 6.39

−1.542

Gender, n(%)

Male

8 (15.4)

10 (20.0)

0.374^a

Female

44 (84.6)

40 (80.0)

BMI

27.26 ± 2.47

26.47 ± 2.35

1.641

Bone density, M(P1, P3)

−3.1 (− 4.05, − 2.65)

−3.4 (− 3.8, − 3)

−1.473

AO/OTA classification, n(%)

31-A1

1(1.9)

1(2.0)

0.049 ^a

31-A2

44(84.6)

43(86.0)

31-A3

7(13.5)

6(12.0)

Age-adjusted CCI

4.115 ± 1.06

4.4 ± 0.83

1.504

ASA score, n(%)

III

25(48.1)

22(44.0)

0.171 ^a

IV

27(51.9)

28(56.0)

Comorbidities diseases, n(%)

Cardiovascular

17(32.7)

18(36.0)

0.124 ^a

Respiratory

4((7.7)

6(12.0)

0.159^b

Neurologic disease

5(9.6)

4(8.0)

0.004 ^b

Diabetes

15(28.8)

17(34.0)

0.315 ^a

Urinary

2(3.8)

3(6.0)

0.002 ^b