Methods: The authors conducted a randomized pilot study targeting a sample size of 30, comparing 2 schedules of chiropractic care to a no-treatment group. Group 1 (limited schedule) was treated for 8 weeks, group 2 (extended schedule) was treated for 8 weeks and then once per month for 10 months, and group 3 received no treatment. Assessments were made at baseline and 1, 2, 6, and 12 months later. The primary outcome was changed in the Berg Balance Scale (BBS) from baseline to 1 year. Changes in the Pain Disability Index and Dizziness Handicap Index were also measured.
Results: Thirty-four patients were enrolled, 13 in group 1, 15 in group 2, and 6 in group 3. Only 5 had baseline BBS scores less than 45, indicating increased risk for falls. There were no treatment-related adverse events. Nine patients dropped out by 1 year. No significant differences within or between groups in median BBS from baseline to 12 months were observed. Median Pain Disability Index scores improved more from baseline to 1 year in group 2 compared with groups 1 and 3 (P = .06, Kruskal-Wallis test). For the 9 patients with dizziness, a clinically significant improvement in Dizziness Handicap Index scores of groups 1 and 2 was observed at 1 month and remained lower than baseline thereafter; this was not true of group 3.
Conclusion: Further investigation of the possible benefit of chiropractic maintenance care (extended schedule) for balance and pain-related disability is feasible and warranted, as well as both limited and extended schedules for patients with idiopathic dizziness.
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