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Table 5 Correlations between changes in SGRQ-Ider domains and changes in anchors from baseline to 12 months

From: Validation of a derived version of the IPF-specific Saint George’s Respiratory Questionnaire

 

GRCS

ΔSGRQ-I

ΔK-BILD

ΔSOBQ

ΔFVC%

ΔDLCO%

Δ6MWD

ΔSGRQ-Ider total

− 0.55

0.95

− 0.56

0.61

− 0.24

− 0.24

− 0.48

ΔSGRQ-Ider symptoms

− 0.51

0.62

− 0.45

0.46

− 0.27

− 0.23

− 0.38

ΔSGRQ-Ider activities

− 0.47

0.68

− 0.48

0.44

− 0.23

− 0.21

− 0.29

ΔSGRQ-Ider impacts

− 0.46

0.87

− 0.44

0.53

− 0.13

− 0.17

− 0.45

  1. Δ: Change from baseline to 12 months; SGRQ-Ider: IPF-specific version of the St. George’s Respiratory Questionnaire derived from results from the original St. George’s Respiratory Questionnaire; GRCS: Global rating of change scales; SGRQ-I: IPF-specific version of the St. George’s Respiratory Questionnaire; K-BILD: King’s Brief Interstitial Lung Disease questionnaire; SOBQ: University of California San Diego Shortness of Breath questionnaire; FVC%: Forced vital capacity % predicted; DLCO%: Diffusing capacity of the lung for carbon monoxide % predicted; 6MWD: Distance walked during the 6-min walk test