Study Population
A total of 248 cases were diagnosed with SMPP, of which 213 cases met
the enrollment criteria. The average time period that elapsed from
disease onset to first bronchoscopy was 8.9 ± 2.4 days, with the average
number of prior bronchoscopies found to be 2.2 ± 1.8. Of the enrolled
cases, 142 cases (142/213, 66.7%) had their first bronchoscopy within
10 days post-disease onset, while 71 cases (71/213, 33.3%) had their
first bronchoscopy 10 days post-onset of disease. 183 cases (183/213,
85.9%) underwent bronchoscopy no more than twice, while 30 cases
(30/213, 14.0%) underwent bronchoscopy at least three times (Table 1).