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. 2014 May 5;12:66. doi: 10.1186/1477-7525-12-66

Table 2.

MCID estimates for EQ-5D based on PDDS subgroups

EQ-5D scores
PDDS*
N
Mean
SD
Median
Min
Max
SEM
0.5 SD
0.33 SD
0
526
0.900
0.119
1.000
0.26
1.00
0.066
0.060
0.040
1
428
0.834
0.117
0.827
0.37
1.00
0.065
0.059
0.039
2
241
0.734
0.147
0.778
0.29
1.00
0.082
0.074
0.049
3
429
0.730
0.163
0.778
0.20
1.00
0.091
0.081
0.054
4
507
0.689
0.167
0.761
0.17
1.00
0.093
0.084
0.056
5
427
0.662
0.171
0.708
0.05
1.00
0.095
0.086
0.057
6
399
0.649
0.177
0.705
0.05
1.00
0.099
0.089
0.059
7
83
0.616
0.182
0.689
-0.04
0.85
0.101
0.091
0.061
8
4
0.463
0.284
0.410
0.18
0.85
0.158
0.142
0.095
Mean Weighted MCID 3044 --- --- --- --- --- 0.084 0.076 0.051

N = number of patients; PDDS = Patient Determined Disease Steps; SEM = standard error of the measurement; SD = standard deviation.

*PDDS Score 0 = mild to no symptoms; 1 = mild disability; 2 = moderate disability; 3 = gait disability; 4 = early cane; 5 = late cane; 6 = bilateral support; 7 = wheel chair/scooter; 8 = bedridden.