Table 3.

Short-term efficacy of bronchoscopic intervention in TACC patients.

Variables	Pre-treatment (number of patients)	Post-treatment (number of patients)	Statistics	P values
mMRC score	n = 52	n = 52	Z = -8.942	P < 0.001
1	0	36
2	2	14
3	17	2
4	33	0
Freitag grade	n = 49	n = 41	Z = -7.231	P < 0.001
I	0	17
II	2	12
III	17	12
IV	21	0
V	9	0
Stenosis degree%	77.18 ± 14.95 (n = 49)	35.64 ± 18.99 (n = 41)	T = 14.07	P < 0.001