Remembering fractures: fracture registration and proband recall in southern Sweden.

pleted the baseline interview, and 90% or more of these completed each of the follow up interviews. In the 3724 person-months during which subjects had "outdoor exposure", 155 falls were reported. The incidence rates of indoor and outdoor falls were 21-2 and 20-4 falls per 1000 person-months, respectively. The table shows that the risk factors differed for indoor and outdoor falls. Our results, if confirmed, suggest that indoor and outdoor falls should be studied as separate outcomes. This distinction might eventually prove useful for the design of preventive interventions. This research was supported by the Fonds de la Recherche en Sante du Quebec (grant 158085).