[PERSIRIS study: observational study, postmarketing, prospective, to evaluate the persistence to treatment with monthly risedronate in women with osteoporosis].

Objective: To assess the persistence of treatment with monthly risedronate and know the reasons of persistence and nontherapeutic persistence and the profile of the non-persistent patients.

Desing: Observational, postmarketin and prospective study.

Location: Primary care, traumatology, rheumatology, gynecology and geriatrics of Catalonia.