The bone evaluation study (BEST): patient care and persistence to treatment of osteoporosis in Germany.

OBJECTIVE: Data on fracture frequency and medical care of patients with osteoporosis are still insufficient. We aimed to analyze frequency of osteoporosis-related fractures and multiple fractures, re-fracture rates, treatment prevalence, and persistence to osteoporosis-related medication in Germany. METHODS AND MATERIALS: Using claims data of a state health insurer (2006 - 2009), we performed a retrospective "real world" analysis. Inclusion criteria were age of 50 years or older and an osteoporosis diagnosis or a prescription for defined osteoporosis-related medication. We assessed fractures, frequencies, and the number of multiple fractures per patient as well as time to follow-up fracture and drug persistence using Kaplan-Meier analysis.
RESULTS: Within the observation period, 27% of the osteoporosis patients sustained fractures; of those with fractures, 69% had multiple fractures. For patients with multiple fractures, re-fracture rate after 360 days was between 69% for patients who received parathyroid hormone and 85% for patients who received no anti-osteoporotic medication 360 days before follow-up fracture. In the patient population, persistence rates after 1 year were between 58% for parathyroid hormone and 2% for other osteoporosis-specific drugs (alfacalcidol, fluorides, nandrolone, calcitonin).
CONCLUSIONS: In Germany, the number of patients with osteoporosis-attributable fractures is high. There are still deficits in proper treatment as well as in drug persistence. Low persistence lead to a relatively high proportion of patients with follow-up fractures.