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Hand OA participant analgesic use. The subgroups with respect to analgesic use in the hand OA group were classified as (1) oral NSAID including diclofenac, ibuprofen, or celecoxib; (2) paracetamol up to 1 g four times daily; (3) oral NSAID (diclofenac) plus opiate (cocodamol); (4) topical NSAID (ibuleve gel). Proportions of participants in each group are shown in addition to percentages.
