Inclusion body myositis functional rating scale: A reliable and valid measure of disease severity

@article{Jackson2008InclusionBM,
  title={Inclusion body myositis functional rating scale: A reliable and valid measure of disease severity},
  author={Carlayne E. Jackson and Richard J. Barohn and Gary S. Gronseth and S. Pandya and Laura L Herbelin},
  journal={Muscle \& Nerve},
  year={2008},
  volume={37}
}
We developed a disease‐specific, 10‐point functional rating scale for patients with inclusion body myositis (IBMFRS). The IBMFRS was utilized as a secondary outcome measure in a multicenter pilot trial of the clinical safety and tolerability of high‐dose beta interferon‐1a. In this trial, 28 IBM patients completed the IBMFRS at baseline and monthly for 6 months. The IBMFRS showed statistically significant correlations (P < 0.001) with maximal voluntary isometric contraction, manual muscle… 
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