Table 1 Comparison of demographic, laboratory, and CGA domains by postoperative complication

 Age (year)

80.3 (6.4)

83.1 (6.8)

0.001

 Sex (male/female)

35/101

30/76

0.655

 Body mass index (kg/m²)

22.0 (3.7)

20.9 (3.8)

0.016

 ASA class (1/2/3/4) ^a

6/77/29/3

6/43/43/1

0.050

 Type of fracture (neck/intertrochanter)

66/70

55/51

0.604

 Anesthesia (general/spinal)

109/27

94/12

0.073

 WBCs (×  10³/μL)

9.8 (3.6)

9.7 (3.5)

0.828

 Hemoglobin (g/dL)

11.5 (2.0)

11.1 (2.0)

0.093

 Platelets (× 10³/μL)

216.1 (81.0)

198.2 (73.0)

0.076

 BUN (mg/dL)

20.0 (11.9)

22.3 (14.3)

0.165

 Creatinine (mg/dL)

0.99 (0.92)

1.22 (1.44)

0.137

 Total Cholesterol (mg/dL)

162.0 (37.8)

150.4 (35.5)

0.016

 Protein (mg/dL)

6.7 (0.6)

6.5 (0.7)

0.024

 Albumin (mg/dL)

3.8 (0.4)

3.5 (0.5)

<  0.001

 Charlson’s comorbidity index

1.5 (1.7)

1.9 (1.8)

0.118

 Polypharmacy (≥5)

96 (70.6%)

78 (73.6%)

0.607

 ADL dependency (partial and full) ^b

58 (42.6%)

69 (65.7%)

< 0.001

 IADL dependency ^b

70 (51.5%)

80 (76.2%)

< 0.001

 MMSE-KC

20.4 (6.4)

14.8 (7.1)

< 0.001

 SGDS-K^c

4.9 (3.7)

6.4 (4.6)

0.025

 Risk of falling (≥10)

42 (30.9%)

55 (51.9%)

0.001

 MNA

22.0 (4.2)

19.6 (4.7)

< 0.001

 Mid-arm circumference (cm)

24.4 (11.4)

22.6 (3.1)

0.112

 Grip strength (kg)

17.7 (7.4)

13.4 (5.9)

< 0.001

 The Koval grade

2.2 (1.7)

2.6 (1.8)

0.074

 Hip-MFS

6.1 (2.8)

7.8 (2.3)

< 0.001