OBJECTIVE: The purpose of this study was to evaluate the feasibility of a randomized controlled trial investigating the effectiveness of a multimodal program (PAT-Back) compared to best practice advice on pain and disability in older adults with chronic low back pain in primary care. METHODS: This feasibility study took place in Fortaleza, Northeast Brazil. The PAT-Back intervention consisted of a program including exercises, pain education, and motivational text messages for the in-home component. The control group received an evidence-based educational booklet. Feasibility outcomes were recruitment, adherence and retention rates, level of difficulty of the education and intervention content, perception of utility of mobile technology, and adverse events. The feasibility criteria were previously defined. RESULTS: A total of 248 people were screened, of which 46 older adults were eligible. The retention rate was high (100% in the PAT-Back group and 95% in the control group). The adherence rate to intervention was partially met (60%), whereas the adherence rate to unsupervised exercises was adequate (75%), and perception about safety to perform home exercise was partially acceptable (70%) in the PAT-Back group. In addition, 100% of older adults reported which text messages motivated them to perform the exercises in the PAT-Back group. Difficulty reported by participants in understanding and performing the intervention was small in both groups. Six participants reported transient adverse events in both groups. CONCLUSION: Older adults accepted both interventions. Results demonstrated that the program is feasible, although minor changes targeting adherence and safety in home exercise are needed. IMPACT: This feasibility study supports progression to a full trial investigating the effectiveness of a multimodal program (PAT-Back) on pain and disability in older adults with chronic low back pain within a primary health care setting in low to middle income countries where such data from the older population are scarce and the burden of low back pain is increasing.

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