Table 3

Magnitude of the MID by worse/better


Global rating of health change



Somewhat worse
Somewhat better


Study/patient group
N
Mean change (SD)
N
Mean change (SD)
Mean Difference (95% CI)
P-value

Older adults 1st follow-up
1087
0.039 (0.099)
275
0.042 (0.098)
-0.004 (-0.017 to 0.009)
0.58
Older adults 2nd follow-up
783
0.028 (0.095)
165
0.019 (0.102)
0.009 (-0.008 to 0.026)
0.32
IBS patients
36
0.022 (0.096)
20
0.026 (0.097)
-0.040 (-0.059 to 0.051)
0.87
IBS control patients
15
0.017 (0.130)
12
0.035 (0.094)
-0.018 (-0.107 to 0.071)
0.69
Leg ulcer patients
14
0.082 (0.109)
31
0.009 (0.105)
0.073 (-0.03 to 0.176)
0.08
OA Knee patients
30
0.003 (0.073)
29
0.036 (0.059)
-0.007 (-0.041 to 0.028)
0.70
Limb reconstruction patients
10
0.044 (0.14)
19
0.051 (0.112)
-0.007 (-0.117 to 0.102)
0.88
Early (RA) patients
17
-0.007 (0.117)
82
0.046 (0.109)
-0.053 (-0.117 to 0.011)
0.08
COPD Patients
19
0.012 (0.095)
10
0.006 (0.074)
0.006 (-0.061 to 0.072)
0.87

P-value from two-independent samples t-test.

Walters and Brazier Health and Quality of Life Outcomes 2003 1:4   doi:10.1186/1477-7525-1-4