• Kaija Karjalainen, Antti Malmivaara, Timo Pohjolainen, Heikki Hurri, Pertti Mutanen, Pekka Rissanen, Helena Pahkajärvi, Heikki Levon, Hanna Karpoff, and Risto Roine.
• Department of Occupational Medicine, Finnish Institute of Occupational Health, Helsinki, Finland. kaija.karjalainen@occuphealth.fi
• Spine. 2003 Mar 15;28(6):533-40; discussion 540-1.

Study DesignRandomized controlled trial.ObjectivesTo investigate the effectiveness and costs of a mini-intervention, provided in addition to the usual care, and the incremental effect of a work site visit for patients with subacute disabling low back pain.Summary Of Background DataThere is lack of data on cost-effectiveness of brief interventions for patients with prolonged low back pain.MethodsA total of 164 patients with subacute low back pain were randomized to a mini-intervention group (A), a work site visit group (B), or a usual care group (C). Groups A (n = 56) and B (n = 51) underwent one assessment by a physician plus a physiotherapist. Group B received a work site visit in addition. Group C served as controls (n = 57) and was treated in municipal primary health care. All patients received a leaflet on back pain. Pain, disability, specific and generic health-related quality of life, satisfaction with care, days on sick leave, and use and costs of health care consumption were measured at 3-, 6-, and 12-month follow-ups.ResultsDuring follow-up, fewer subjects had daily pain in Groups A and B than in Group C (Group A Group C, = 0.002; Group B Group C, = 0.030). In Group A, pain was less bothersome (Group A Group C, = 0.032) and interfered less with daily life (Group A Group C, = 0.040) than among controls. Average days on sick leave were 19 in Group A, 28 in Group B, and 41 in Group C (Group A Group C, = 0.019). Treatment satisfaction was better in the intervention groups than among the controls, and costs were lowest in the mini-intervention group.ConclusionsMini-intervention reduced daily back pain symptoms and sickness absence, improved adaptation to pain and patient satisfaction among patients with subacute low back pain, without increasing health care costs. A work site visit did not increase effectiveness.

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