Fig. 1From: Validation of the IPF-specific version of St. George’s Respiratory QuestionnaireBland-Altman plot of the agreement between SGRQ-I and SGRQ for all patients. The solid line is the mean difference, while the dashed lines are the 95% limits of agreement. SGRQ-I: IPF-specific version of the St. George’s Respiratory Questionnaire; SGRQ: St. George’s Respiratory QuestionnaireBack to article page