Development of a fatigue scale

A self-rating scale was developed to measure the severity of

fatigue. Two-hundred and seventy-four new registrations on a

general practice list completed a 14-item fatigue scale. In

addition, 100 consecutive attenders to a general practice

completed the fatigue scale and the fatigue item of the

revised Clinical Interview Schedule (CIS-R). These were

compared by the application of Relative Operating

Characteristic (ROC) analysis. Tests of internal consistency

and principal components analyses were performed on both sets

of data. The scale was found to be both reliable and valid.

There was a high degree of internal consistency, and the

principal components analysis supported the notion of a

two-factor solution (physical and mental fatigue). The

validation coefficients for the fatigue scale, using an

arbitrary cut off score of 3/4 and the item on the CIS-R were:

sensitivity 75.5 and specificity 74.5.

Chalder T, Berelowitz G, Pawlikowska T, Watts L, Wessely S, Wright

D, Wallace EP

1 Star2 Stars3 Stars4 Stars5 Stars (No Ratings Yet)

Leave a Reply