Four Nordic studies testing the effect of 'reassuring information' based on the 'Functional Disturbance'-model (proposed by Indahl et al. 1999 - also called the 'non-injury'-model) have all been effective at positively altering the functional level and/or days of sickness absence - when provided in combination with other elements to people with subacute/chronic back pain. The present study set out to test the effect of this kind of resassuring information alone.