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Table 1 Demographic and clinical characteristics for all hip-fractured participants, and differences between groups: preoperative ASA scores determined by independent t-test (a) or Chi-squared tests

From: The relationship between preoperative American Society of Anesthesiologists Physical Status Classification scores and functional recovery following hip-fracture surgery

 

Total Participants

Groups

 

Variable

(n = 226)

ASA 1–2

(n = 114)

ASA 3

(n = 112)

p-Value

Age (years) (mean ± SD)

78.22 ± 7.70

77.06 ± 7.40

79.39 ± 7.85

.023a

Gender, n (%)

   

.14

 Male

78 (34.5%)

34 (29.8%)

44 (39.2%)

 

 Female

148 (65.5%)

80 (70.2%)

68 (60.7%)

 

Hospital stay (days) (mean ± SD)

9.96 ± 5.06

10.02 ± 4.91

9.89 ± 5.24

.85

Education, n (%)

   

.92

 None

133 (58.5%)

69 (60.6%)

64 (57.1%)

 

 Primary

52 (23.0%)

24 (21.1%)

28 (25.0%)

 

 High School

27 (11.9%)

14 (12.3%)

13 (11.6%)

 

 College or above

14 (6.2%)

7 (6.1%)

7 (6.2%)

 

Fracture classification, n (%)

   

.73

 Femoral neck

113 (50.0%)

57 (50.0%)

56 (50.0%)

 

 Intertrochanteric

104 (46.0%)

52 (45.6%)

52 (46.4%)

 

 Subtrochanteric

9 (4.0%)

5 (4.4%)

4 (3.6%)

 

Type of surgery, n (%)

   

.76

 Arthroplasty

87 (38.5%)

45 (39.5%)

42 (37.5%)

 

 Internal fixation

139 (61.5%)

69 (60.5%)

70 (62.5%)

 

Number of comorbidities (mean ± SD)

0.90 ± 0.85

0.77 ± 0.86

1.03 ± 0.82

.024a

Presence of comorbidity (type), n (%)

 Cardiovascular disease

46 (20.4%)

17 (14.9%)

29 (25.9%)

.04

 Hypertension

99 (43.8%)

46 (40.4%)

53 (47.3%)

.29

 Diabetes mellitus

58 (25.7%)

25 (21.0%)

33 (29.7%)

.20

Unable to walk independently pre-fracture, n (%)

17 (7.5%)

5 (4.4%)

12 (10.7%)

.07

CBI performance, pre-fracture (mean ± SD)

97.15 ± 6.39

97.72 ± 5.84

96.56 ± 6.88

.174a

  1. Abbreviations: ASA American Society of Anesthesiologists; SD standard deviation; CBI Chinese Barthel Index
  2. a P-value determined by independent t-test, otherwise determined by Chi-square test