Table 4

Comparison of hospitalisation characteristics between idiopathic and secondary pneumothorax

CharacteristicsOverall
N=59 637
Idiopathic
N=50 596
Secondary
N=9041
p Value
Age (years), mean (SD)38 (19)35 (18)53 (20)<0.0001
Sex, male, n (%)45 711 (77%)38 508 (76%)7203 (80%)<0.0001
Place of hospitalisation<0.0001
 Surgical ward16 236 (27%)12 938 (26%)3298 (36%)
 Medical ward43 401 (73%)37 658 (74%)5743 (64%)
Intensive or intermediate care unit16 057 (27%)12 456 (25%)3601 (40%)<0.0001
Surgical treatment14 352 (24%)11 398 (23%)2954 (33%)<0.0001
Hospitalisation duration, days, median (Q1, Q3)7.0 (9.0)6.1 (7.2)12.2 (14.5)<0.0001
Rehospitalisations, n (%)29 126 (49%)24 432 (48%)4694 (52%)<0.0001