Table 5 Functional and health status correlates of different threshold for the change (Δ) in CET
Clinically meaningful range for CETnMean (SD)ΔCET (s)Mean (SD)ΔSGRQ TotalEffect size for SGRQ
Lower boundary >100 s117482 (292)−9.4 (10.0)0.59
Intermediate boundary >150 s103527 (278)−9.8 (10.3)0.62
Upper boundary >200 s88598 (251)−10.1 (10.3)0.63
  • CET, constant work rate cycle endurance test; SGRQ, St George Respiratory Questionnaire.