Background: Self-report questionnaires play an important role as outcome measures in shoulder research. Having an estimate of the measurement error of these ...

excludes observations with missing values using listwise deletion. This example does not examine the correlation matrix but assumes that all items are positively correlated. Normally, you want to ...

Quality of Life Research, Vol. 18, No. 7 (Sep., 2009), pp. 923-927 (5 pages) Purpose To cross-culturally adapt and validate the Italian version of the Manchester-Oxford Foot Questionnaire (MOXFQ) in ...

The forward and back translation of OSS revealed no difficulties. Item 17 in WORC (How much difficulty do you have "roughhousing or horsing around" with family or friends?) and item 20 (How "down in ...