Table 2 Comparison between subjects with and without recurrence within 24 h (n = 122)
From: Clamping of chest drain before removal in spontaneous pneumothorax
Early recurrence (within 24 h) | P-value* | ||||
|---|---|---|---|---|---|
No | Yes | ||||
(n = 106) | (n = 16) | ||||
Age (year) | 58.9 ± 22.7 | 61.4 ± 24.3 | 0.135 | ||
Male sex | 98 | (92.5) | 14 | (87.5) | 0.619 |
Smokinga | 1.000 | ||||
Never | 18 | (17.1) | 2 | (12.5) | |
Ex-smoker | 59 | (56.2) | 10 | (62.5) | |
Current smoker | 28 | (26.7) | 4 | (25) | |
Charlson comorbidity index | 1.8 ± 2.1 | 1.9 ± 1.9 | 0.581 | ||
Secondary pneumothorax | 74 | (69.8) | 12 | (75) | 0.776 |
Side of pneumothorax | 0.644 | ||||
Right | 42 | (39.6) | 5 | (31.3) | |
Left | 63 | (59.4) | 11 | (68.8) | |
Bilateral | 1 | (0.9) | 0 | ||
Size of pneumothoraxb | 57.2 ± 25.2 | 50.3 ± 23.5 | 0.104 | ||
No. of previous episodes | 0.023 | ||||
0 | 69 | (65.1) | 6 | (37.5) | |
1 | 21 | (19.8) | 8 | (50) | |
2 | 10 | (9.4) | 0 | ||
≥ 3 | 6 | (5.7) | 2 | (12.5) | |
Total no. of chest tube(s) | 0.270 | ||||
1 | 93 | (87.7) | 13 | (81.3) | |
2 | 8 | (7.5) | 3 | (18.8) | |
≥ 3 | 5 | (4.7) | 0 | ||
Prior medical pleurodesis | 53 | (50) | 8 | (50) | 1.000 |
Type of chest tube | 0.152 | ||||
≥ fr 18 | 62 | (58.5) | 8 | (50) | |
fr 12 | 44 | (41.5) | 7 | (43.8) | |
fr 8 | 0 | 1 | (6.3) | ||
Clinical setting | 0.578 | ||||
Medical | 101 | (95.3) | 15 | (93.8) | |
Non-medical | 5 | (4.7) | 1 | (6.3) | |
Duration of cessation of air leak before clamping/ removal (hour) | 47.2 ± 34.4 | 33.2 ± 25.5 | 0.221 | ||
Duration of drainage (day) | 10.3 ± 12.5 | 11.7 ± 19.2 | 0.596 | ||