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Two hundred people aged 55 to 94 with arthritis participated in a 12-hour community-based, lay-led arthritis self-management course. Participants in the 55–74 age group showed significant gains in knowledge and decreases in pain for 20 months and in disability for 8 months. Participants in the 75–94 age group also increased their knowledge for 20 months and decreased their pain and number of visits to physicians for 8 months.
Long et al. (1984) studied this question.