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Table 2 Characteristics of total hip arthroplasty recipients: Pre-matching

From: The effectiveness of inpatient rehabilitation after uncomplicated total hip arthroplasty: a propensity score matched cohort

 

Inpatient Rehabilitation Group, n = 141

No Inpatient Rehabilitation Group, n = 290

Standardized Mean Difference

P-value

Age, mean (SD), y

68.7 (9.9)

63.7 (10.4)

0.50

< 0.001

Male, % (n)

68.1 (96)

47.6 (138)

0.42

< 0.001

BMI, mean (SD)

27.7 (4.9)

28.2 (4.9)

0.11

0.27

Education, % (n)

 1

1.4 (2)

1.4 (4)

0.0

0.97

 2

21.3 (30)

18.3 (53)

0.08

0.46

 3

56.7 (80)

51.4 (149)

0.11

0.30

 4

20.6 (29)

29.0 (84)

0.20

0.06

ASA, % (n)

 1

9.2 (13)

19.1 (55)

0.29

0.009

 2

54.6 (77)

62.2 (180)

0.15

0.14

 3

33.3 (47)

17.4 (50)

0.37

< 0.001

 4

2.8 (4)

1.4 (4)

0.10

0.30

Comorbidity, % (n)

 Nil

8.5 (12)

21.7 (63)

0.38

< 0.001

 Yes, but no daily medication

5.0 (7)

11.4 (33)

0.24

0.03

 Yes, with daily medication

86.5 (122)

66.9 (194)

0.48

< 0.001

 Oxford Hip Score, mean (SD)

22.3 (9.2)

24.4 (8.6)

0.24

0.02

 EuroQol VAS, mean (SD)

71.4 (19.0)

73.5 (16.3)

0.12

0.24

 Other lower limb or back problems limiting mobility, % (n)

51.1 (72)

42.1 (122)

0.18

0.08

 Anterior surgical approach

33.8 (48)

31.0 (90)

0.06

0.56

 Paid employment, % (n)

31.2 (44)

44.1 (128)

0.27

0.01

  1. Abbreviations: BMI body mass index, ASA American Society of Anesthesiology, Education 1 = nil formal; 2 = Year 10 or less; 3 = Year 11 or 12; 4 = Degree or greater; Comorbidity included any conditions of the cardiovascular, renal, respiratory, endocrine, liver, central and peripheral nervous systems, and excluding other musculoskeletal conditions. Note: Standardized mean difference was calculated using the following equation - Standardized Mean Difference34 = (Mean1 – Mean 2)/√((SD1)2 + (SD2)2)/2