Fig. 2From: Chronic Airways Assessment Test: psychometric properties in patients with asthma and/or COPDLinearity between CAAT and SGRQ total scores for the total sample and each diagnostic group. Error bars represent standard errors; data points with no error bars are representative of one patient with that SGRQ score. CAAT Chronic Airways Assessment Test, COPD chronic obstructive pulmonary disease, SGRQ St George’s Respiratory QuestionnaireBack to article page