3.2. Symptom score
±, −7.3
After 52-weeks of treatment, the average change in the SGRQ-total score was −11.3 ± 14.6 in the Tai Chi group and −7.3 ± 13.1 in the control group. The between-group difference after controlling for baseline and site was −4.15 (95% CI −8.35 to −0.87), with a statistically significant difference (Comparison of SGRQ scores in the 2 groups.SGRQ = St George’s Respiratory Questionnaire.