, clinically evaluable population; NIV, noninvasive ventilation; NR, not reported. Age >75 exclusion criteria. †Value based on mean age data provided for each disease state. ‡Cohort who survived to 9 mo. Cohort who survived to 8 y. Age >75 inclusion criteria. Median. Several studies grouped RTD with NMD; ††% aggregate proportion was based on total clinically evaluable population where both the numerator and denominator were available within the study. ‡‡Including lung disease.