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Outcome variables in osteoporosis trials.
M Kleerekoper1, D A Nelson, E L Peterson
1Bone and Mineral Division, Henry Ford Hospital, Detroit, MI 48202.
Bone
|January 1, 1992
Summary
Evaluating osteoporosis treatments requires precise outcome measures. Radiographic documentation of vertebral fractures is the definitive endpoint, while stature measurement offers a practical surrogate for clinical trials.
Area of Science:
- Osteoporosis research
- Clinical trial methodology
- Bone health assessment
Background:
- Controlled clinical trials for osteoporosis therapies are evolving.
- Bone mass and back pain are secondary outcomes.
- Accurate measurement is crucial for evaluating anti-fracture efficacy.
Purpose of the Study:
- To review data acquisition for osteoporosis clinical trials.
- To highlight the importance of definitive endpoints.
- To discuss surrogate outcome variables and their application.
Main Methods:
- Review of data acquisition techniques in clinical trials.
- Emphasis on radiographic documentation of vertebral fractures as the primary endpoint.
- Discussion of serial stature measurement as a surrogate outcome variable.
Main Results:
- Bone mass and back pain are ancillary outcomes.
- Serial stature measurement is a cost-effective surrogate for large studies.
- Radiographic vertebral fracture assessment is the gold standard endpoint.
Conclusions:
- Definitive endpoints like radiographic vertebral fractures are essential.
- Stature measurement offers a practical alternative for large-scale trials.
- Further research is needed on fracture definition and frequency calculation.