Table 4.
Cronbach’s Alpha Values by Measurement.a
Measurement | Cronbach’s Alpha | Average Cronbach’s Alpha |
---|---|---|
Disc anterior-posterior | .851 | .672 |
Disc midwidth | .381 | |
Canal anterior-posterior | .659 | |
Canal midwidth | .798 | |
Disc area | .707 | .785 |
Canal area | .863 |
a Linear measurements on average have a lower reliability than multipoint measurements using AGFA-IMPACS.