1. SGRQ total scores by (A) FVC % predicted at baseline and (B) use of supplemental oxygen at baseline.
SGRQ total scores by (A) FVC % predicted at baseline and (B) use of supplemental oxygen at baseline. The circles denote the mean values, the midlines of the boxes indicate the median values and boundaries denote 25th and 75th percentiles; whiskers are the minimal and maximum values in the lower fence (1.5 interquartile range above 75th percentile) and upper fence (1.5 interquartile range below 25th percentile). FVC % predicted at baseline: lower quartile=65.92, upper quartile=90.62. FVC, forced vital capacity; SGRQ, St George’s Respiratory Questionnaire.
Jeffrey J Swigris et al. BMJ Open Resp Res 2018;5:e000278
©2018 by British Thoracic Society