What factors predict recurrence of a spontaneous pneumothorax?

Table 1 The relationship between recurence and clinicopathological characteristics

Characteristic	Total	Rec^a	%	Non-rec	p-value
All cases	214	35	16.4	179
Age (years)
<28	102	17	16.7	85
≥28	112	18	16.1	94	0.906
Gender
Male	182	28	15.4	154
Female	32	7	21.9	25	0.360
Smoking
Yes	75	7	9.3	68
No	139	28	20.1	111	0.041
Lesion site
Right	103	16	15.5	87
Left	111	19	17.1	92	0.754
Lesion location
Top	177	29	16.4	148
Other than top	37	6	16.2	31	0.980
Comorbidities
Yes	44	12	27.3	32
No	170	23	13.5	147	0.028
ISP^b
Yes	50	9	18.0	41
No	164	26	15.9	138	0.719
CSP^c
Yes	37	5	13.5	32
No	177	30	16.9	147	0.607
Surgery for ISP
Yes	22	8	36.4	14
No	192	27	14.1	165	0.007

^a Rec: recurrence, ^b ISP: ipsilateral spontaneous pneumothorax, ^c CSP: contralateral spontaneous pneumothorax.

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