Measurement parameter-determined for each subject in measurement session 1 + 2 (test-retest) |
Range of motion |
ROMG1/G2, ROMV1/V2
|
Maximum range of motion measured within a method and session |
Test-retest difference |
DIFFG/DIFFV
|
Individual test-retest difference of ROM: DIFFG = ROMG1 − ROMG2/DIFFV = ROMV1 − ROMV2
|
Test-retest and repeatability parameter—between test and retest within the same method over all subjects |
Mean difference |
meanDG/meanDV
|
Mean DIFFG/DIFFV
|
Standard deviation of the difference |
SDDG/SDDV
|
Standard deviation of DIFFG/DIFFV
|
Standard error of measurement |
SEMG/SEMV
|
Estimated measurement precision according to de Vet24: SEM = SDD/√2 |
Minimal detectable difference |
MDDG/MDDV
|
MDD = 1.96 × SDD |
% within 5° or 10° |
PDG < 5° or < 10°/PDV < 5° or < 10° |
Percentage of subjects with an absolute |DIFFG|/|DIFFV| smaller than 5° or 10° |
Intraclass correlation coefficient |
ICCG/ICCV
|
Intraclass correlation coefficient (3,1) of the test-retest measurement of the ROM |
Method comparison—between measurement methods |
Mean ROM |
MeanromG/MeanromV
|
Mean ROM of test and retest of each subjects averaged over all subjects |
Standard deviation of ROM |
SDromG/SDromV
|
Standard deviation of MeanromG/MeanromV
|