Primary and Secondary Spontaneous Pneumothorax: Prevalence, Clinical Features, and In-Hospital Mortality
Table 2
Demographic distribution and clinical features of spontaneous pneumothorax.
SP
PSP
SSP
value
Number of pneumothoraxes
938
611 (65.1)
327 (34.9)
Patients
751
485 (64.6)
266 (35.4)
Age at the time of pneumothorax (Mean ± SD)
43 ± 13
27 ± 12
70 ± 14
<
Sex-wise distribution of pneumothoraxes
Men
809 (86.2)
533 (65.9)
276 (34.1)
Women
129 (13.8)
78 (60.5)
51 (39.5)
Laterality
Left
450 (48.0)
314 (51.4)
136 (41.6)
Right
476 (50.7)
288 (47.2)
188 (57.5)
Bilateral
11 (1.2)
8 (1.3)
3 (0.9)
Unknown
1 (0.1)
1 (0.1)
0 (0.0)
Smoking status
Smoker
593 (63.2)
402 (67.8)
191 (32.2)
Never
336 (35.7)
203 (60.4)
133 (39.6)
Unknown
9 (0.1)
6 (66.7)
3 (33.3)
Emergency transportation (%)
82 (8.7)
15 (2.4)
67 (20.5)
<
Surgical intervention (%)
477 (50.8)
374 (61.2)
103 (31.5)
<
LOS days (median ± SD)
11 ± 13 (8)
9 ± 5 (8)
16 ± 20 (11)
<
In-hospital mortality
16 (1.71)
1 (0.16)
15 (4.59)
<
Data are presented as (%) unless otherwise specified. between the SSP and PSP groups; of pneumothoraxes of left, right, bi, and unknown laterality among patients with PSP and SSP (4 × 2 contingency table); of smokers among patients with PSP and SSP. SP, spontaneous pneumothorax; PSP, primary SP; SSP, secondary SP; SD, standard deviation; LOS, length of stay.
