Table 2—

St George’s Respiratory Questionnaire (SGRQ) baseline scores and changes during an acute exacerbation of chronic obstructive pulmonary disease (AECOPD) following early identification

SGRQ	Baseline^#	Change in SGRQ score^¶
SGRQ	Baseline^#	n	Onset	n	4–8 days	n	11–15 days
Activity	59.3±21.2	93	12.1±18.1***	101	9.8±19.0***	111	3.1±15.5*
Impact	27.2±18.4	93	14.0±15.2***	102	9.4±16.6***	111	3.3±14.7*

Data are presented as mean±sd, unless otherwise stated. ^#: the most recent SGRQ score taken ≥48 h prior to an AECOPD (mean±sd time delay between baseline and exacerbation was 33.2±22.3 days); ^¶: change from the most recent score taken ≥48 h prior to an AECOPD. *: p<0.05; ***: p<0.001.