Table 3

Correlation between KQoL-26 scores, EQ-5D, Lysholm Knee Score, SF-36 and days affected by knee problem (n = 559)

KQoL-26 scales
Variable
 Physical functioning
 Activity limitations
 Emotional functioning
EQ-5D score
 .54
 .49
 .50
     Mobility
 .52
 .49
 .35
     Self-care
 .35
 .31
 .21
     Usual activities
 .31
 .31
 .31
     Pain/discomfort
 .43
 .38
 .40
     Anxiety/depression
 .32
 .34
 .45




Lysholm Knee Scorea
 .76
 .76
 .58




SF-36:


     Physical functioning
 .75
 .65
 .50
     Role physical
 .54
 .61
 .55
     Bodily pain
 .54
 .62
 .55
     General health
 .25
 .22
 .21
     Vitality
 .43
 .44
 .48
     Social functioning
 .57
 .66
 .60
     Role emotional
 .47
 .52
 .56
     Mental health
 .41
 .40
 .51




     Physical Component Summary
 .64
 .63
 .47
     Mental Component Summary
 .39
 .44
 .55




Days off work due to knee
 .25
 .38
 .28
Days normal activity prevented
 .38
 .46
 .43

a Cardiff survey data (n = 323)

All correlations are statistically significant (p < 0.01)

Garratt et al. Health and Quality of Life Outcomes 2008 6:48   doi:10.1186/1477-7525-6-48