Alpha if item deleted

Interference alpha

0.779

General activity

0.935

Mood

0.785

Walking ability

0.543

Work

0.919

Relations with others

0.681

Sleep

0.418

Enjoyment of life

0.768

Severity alpha

0.833

Pain worst

0.851

Pain least

0.775

Pain average

0.838

Pain Now

0.724