Methods: A cohort of 55 volunteers, first evaluated over a 5-week natural-history baseline period, was offered 5-week chiropractic treatment and then interviewed at 6 months posttreatment. Descriptive and preliminary inferential analyses are reported. Start values for power analysis are offered.
Results: The project recruited a sample of 55 and retained 47 (85%) participants over 8 months, indicating feasibility of a larger project. Participants provided strong self-reported, albeit preliminary, evidence of benefit. Mean values and SDs of pain and strength measures are provided for future power calculations.
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