TABLE 3.

Pre- and post-operative values of FEV₁ and % LAA (right and left side) of each patient

Patient	1	2	3	4	5	6	All	All
LVRS	Bilateral	Bilateral	Unilateral right	Bilateral	Bilateral	Bilateral homogeneous	Median (IQR)	p-value
FEV1 pre % pred	22	22	27	36	20	24	23 (21.5–29.3)
FEV1 post % pred	45	35	35	55	44	33	39 (34.5–47.5)	0.028
% LAA right pre	73.3	41.6	50.3	52.1	23.7	37.3#	50.3 (32.7–62.7)
% LAA right post	53.8	28.4	38.6	44.3	17.5	41#	38.6 (23–49)	0.043
% LAA left pre	63.5	55.9	44.3	52.7	32.6	33#	54.3 (37.6–61.6)
% LAA left post	55.6	38.6	43.9	43.6	19.8	37#	44.6 (25.8–53.1)	0.068

FEV₁: forced expiratory volume in 1 s; LAA: low attenuation area; LVRS: lung volume reduction surgery; IQR: interquartile range. ^#: not included for analysis of median and p-values.