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Table 2 The scales of the List of Functional Abilities under two successive disability pension legislations: reliability (Cronbach's Alpha) and 95% confidence interval.

From: The dimensional structure of the functional abilities in cases of long-term sickness absence

Scale (number of items)

Disability pension legislation WIA/time period 2005-2007 (N = 50,931)

Disability pension legislation WAO/time period 2003-2005 (N = 80,968)

Work stress (9)

0.856 (0.854-0.858)

0.827 (0.826-0.829)

No independence in performance (7)

0.727 (0.723-0.731)

0.724 (0.721-0.727)

Communication (6)

0.537 (0.530-0.543)

0.491 (0.485-0.496)

Taking initiative (3)

0.749 (0.745-0.753)

0.718 (0.715-0.721)

Social task demands (6)

0.800 (0.797-0.802)

0.766 (0.763-0.768)

Cognitive functioning (7)

0.791 (0.788-0.793)

0.757 (0.754-0.760

Acting efficiently (3)

0.592 (0.586-0.598)

0.635 (0.631-0.640)

Use of the legs (8)

0.924 (0.923-0.925)

0.914 (0.913-0.915)

Grip of the hand (5)

0.937 (0.936-0.937)

0.903 (0.902-0.904)

Use of the arms (7)

0.865 (0.864-0.867)

0.843 (0.842-0.845)

Posture of the trunk/back (3)

0.720 (0.716-0.725)

0.730 (0.727-0.733)

Use of the hand and fingers (7)

0.762 (0.759-0.766)

0.683 (0.680-0.687)

Use of the neck (2)

0.691 (0.686-0.697)

0.675 (0.670-0.679)

Movement of the trunk/back (4)

0.612 (0.606-0.617)

0.583 (0.578-0.588)

Working hours (2)

0.973 (0.972-0.973)

0.968 (0.968-0.969)