TABLE 2.

Results of the RejuvenAir System Metered Cryospray study [29]

	RCT	Subjects	Time point	Result
Quality of life
SGRQ total score change	No	34	3 months	−6.4±14.4
	No	31	12 months	−4.6±15.1
CAT total score change	No	34	3 months	−3.8±7.1
	No	31	12 months	−2.0±7.2
Chronic bronchitis symptoms
LCQ total score change	No	34	3 months	21.6±32.2
	No	31	12 months	9.1±29.0
Lung function
FEV1 mL change	No	34	3 months	−33.2±167
	No	31	12 months	−96.5±198
Exercise capacity
6MWD m change	No	34	3 months	1.1±55.4
	No	31	12 months	8.5±76.2

Data are presented as n or mean±sd. Statistically significant values compared to baseline (p<0.05) are presented in bold. RCT: randomised controlled trial; SGRQ: St George's Respiratory Questionnaire; CAT: COPD Assessment Test; LCQ: Leicester Cough Questionnaire; FEV₁: forced expiratory volume in 1 s; 6MWD: 6-min walk distance.