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Fig. 2 | Respiratory Research

Fig. 2

From: Responsiveness and minimal clinically important difference of SGRQ-I and K-BILD in idiopathic pulmonary fibrosis

Fig. 2

Results of linear regression comparing SGRQ-I (A) and K-BILD (B) scores from baseline to 12 months in groups of different stages of disease. Patients were divided into three equally large groups according to stage of disease by SOBQ, SGRQ, FVC, DLCO and 6MWD. For GRCS, patients were divided into deteriorated, unchanged or improved (see Additional file 1 for group details). *: p < 0.05 for linear effect. Δ: Change from baseline to 12 months; SGRQ-I: IPF-specific version of the Saint George’s Respiratory Questionnaire, K-BILD: King’s Brief Interstitial Lung Disease questionnaire, CI: Confidence interval, GRCS: Global Rating of Change Scales, SOBQ: University of California San Diego Shortness of Breath questionnaire, SGRQ: Saint George’s Respiratory Questionnaire, FVC: Forced vital capacity, DLCO: Diffusing capacity of the lung for carbon monoxide, 6MWD: Distance walked during the 6-min walk test

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