Two-port versus three-port video-assisted thoracoscopic surgery for primary spontaneous pneumothorax: feasibility, postoperative outcome and long-term recurrence rates

Table 1 Clinical characteristics

Variables	Two-port VATS N = 28	Three-port VATS N = 30	p-value
Age (years)	23 (range 18–40)	22 (range 18–39)	0.49
Sex (n; %)			0.97
Female	5 (17.9%)	5 (16.7)
Male	23 (82.1%)	25 (83.3%)
Weight (kg)	70	63	0.53
Height (m)	1.80	1.80	0.77
BMI (kg/m²)	21.35	20.15	0.51
Side of pneumothorax			0.54
Right	22 (78.6%)	15 (50%)
Left	6 (21.4%)	15 (50%)
Collins (A + B + C) (cm)	8.99	9.4	0.95
Active smoker			0.445
Yes	7 (25%)	5 (16.7)
No	21 (75%)	25 (83.3%)
History of pneumothorax	1	3	0.336

Unless otherwise specified, all data are presented as mean value. BMI Body-Mass-Index, cm centimetre, Kg kilogram, m metre, A *p-value < 0.05 indicates statistical significance. Collins (A + B + C) = sum of the intrapleural distances (cm) according to the regression formula derived from Collins et al. (13)

ISSN: 1471-2482