Table 1 Patient characteristics classified by position of the tip of thoracic tube in unweighted and weighted study populations

71.0 (66.0–82.0)

68.0 (58.8–74.0)

0.029

0.490

70.0 (61.2–79.6)

72.0 (64.4–76.3)

0.839

0.044

2 (4.9)

8 (17.4)

0.136

0.406

6.6 (18.8)

4.4 (15.8)

0.835

0.079

19.7 (17.2–23.9)

21.3 (18.3–25.2)

0.121

0.321

19.6 (16.3–23.9)

20.3 (17.9–23.6)

0.756

0.222

18.3 (10.7–22.9)

19.6 (12.8–30.1)

0.308

0.257

19.5 (13.1–26.4)

16.8 (11.6–24.5)

0.365

0.030

30 (73.2)

34 (73.9)

1.000

0.017

26.0 (73.5)

21.5 (77.8)

0.756

0.101

19 (51.4)

25 (58.1)

0.702

0.137

21.1 (59.8)

15.8 (57.2)

0.863

0.052

7.33 (7.21–7.50)

7.32 (7.13–7.49)

0.659

0.108

7.27 (7.08–7.52)

7.26 (7.11–7.49)

0.963

0.036

19.0 (1.0–83.0)

27.0 (1.0–71.0)

0.741

0.002

10.2 (1.0–86.6)

3.0 (1.0–80.2)

0.778

0.002

1267.5 (495.0–2077.5)

1697.0 (973.0–3595.0)

0.065

0.306

1093.2 (540.9–1727.4)

1407.2 (919.3–2966.4)

0.300

0.061

7 (17.1)

10 (21.7)

0.782

0.118

6.3 (17.8)

4.9 (17.8)

0.997

0.001

0.894

0.104

0.794

0.192

9 (22.5)

9 (20.5)

7.2 (20.4)

4.0 (14.3)

21 (52.5)

22 (50.0)

15.2 (43.1)

14.1 (51.2)

10 (25.0)

13 (29.5)

12.9 (36.5)

9.5 (34.4)

0.232

0.374

0.841

0.181

8 (19.5)

16 (34.8)

13.2 (37.3)

8.0 (28.9)

23 (56.1)

23 (50.0)

14.6 (41.3)

13.2 (47.9)

10 (24.4)

7 (15.2)

7.6 (21.4)

6.4 (23.2)