Table 2. Postoperative recurrence and recurrence-free probability with spontaneous pneumothorax.

	Recurrence (rate, %)	5-year RFP, %
Recurrence
Yes	41 (17.6)	65.6
No	192 (82.4)	–
Recurrence by age
<20 years	17 (32.1)	44.2
<30 years	17 (26.2)	48.5
<40 years	0 (0.0)	100.0
<50 years	4 (15.4)	62.8
<60 years	1 (10.0)	63.9
<70 years	1 (4.0)	95.2
<80 years	1 (3.1)	62.2
<90 years	0 (0.0)	100.0

RFP, recurrence-free probability.