Table 4—

Canonical correlation coefficients

Mean
(FEV1, clinic-measured PEF) and (daytime symptom, “as-needed” β-agonist use)0.202–0.269
(Patient-reported PEF) and (daytime symptom, “as-needed” β-agonist use)0.213–0.274
(FEV1 and daytime symptom) and (“As-needed” β-agonist use)0.556–0.660
(FEV1 “as-needed” β-agonist use) and (Daytime symptom)0.531–0.663
  • FEV1: forced expired volume in one second

  • PEF: peak expiratory flow