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. 2012 Oct 30;10:130. doi: 10.1186/1477-7525-10-130

Table 2.

Known Groups Validity of Lawton IADL Scale According to relevant categories

 
 Hip + Wrist
 Hip
 Wrist
 
 (n=1965)
 (n=934)
 (n=1031)
  n Mean (SD) n Mean (SD) n Mean (SD)
Total
 1903
 5.56 (2.84)
 903
 4.32 (2.95)
 1000
 6.68 (2.22)
Age
  
  
  
  
  
  
≤75a
 582
 7.18 (1.82)b,c
 118
 6.25 (2.60)b,c
 464
 7.42 (1.48)b,c
76-85b
 823
 5.58 (2.77)a,c
 395
 4.64 (2.90)a,c
 428
 6.45 (2.34)a,c
>85c
 498
 3.63 (2.75)a,b
 390
 3.41 (2.75)a,b
 108
 4.43 (2.62)a,b
p-value
  
 <0.0001
  
 <0.0001
  
 <0.0001
Barthel Index
  
  
  
  
  
  
≤35a
 65
 0.42 (0.56)c
 52
 0.35 (0.48)c
 13
 0.69 (0.75)b,c
40-55b
 99
 1.36 (1.61)c
 80
 1.08 (1.21)c
 19
 2.58 (2.39)a,c
≥60c
 1714
 6.00 (2.54)a,b
 758
 4.94 (2.72)a,b
 956
 6.84 (2.03)a,b
p-value
  
 <0.0001
  
 <0.0001
  
 <0.0001
SF-12 PCS scale
  
  
  
  
  
  
<50
 1229
 4.71 (2.91)
 714
 3.86 (2.84)
 515
 5.89 (2.57)
≥50
 601
 7.43 (1.41)
 149
 6.83 (2.01)
 452
 7.63 (1.09)
p-value
  
 <0.0001
  
 <0.0001
  
 <0.0001
WOMAC-SF Function Subscale
  
  
  
  
  
  
[0–25]a
 -
 -
 351
 6.44 (2.16)b,c
 -
 -
(25–50]b
 -
 -
 261
 3.99 (2.59)a,c
 -
 -
(50–100]c
 -
 -
 300
 2.18 (2.30)a,b
 -
 -
p-value
  
 -
  
 <0.0001
  
 -
QuickDASH
  
  
  
  
  
  
[0–25]a
 -
 -
 -
 -
 855
 7.09 (1.79)b,c
(25–50]b
 -
 -
 -
 -
 98
 4.71 (2.77)a,c
(50–100]c
 -
 -
 -
 -
 41
 2.88 (2.58)a,b
p-value   -   -   <0.0001

a,b,c Superscript letters indicate differences among the respective categories of a variable by Scheffe test for multiple comparison.

PCS: WOMAC physical component summary.