Closed thoracic drainage in elderly patients with chronic obstructive pulmonary disease complicated with spontaneous pneumothorax: A retrospective study

Table 2 Comparison of clinical data between indwelling pleural catheters group and central venous catheters group, n (%)

Clinical data	IPC group (n = 42)	CVC group (n = 18)	t/χ2	P value
Lung recruitment time (d)	1.52 ± 0.27	2.92 ± 0.73	-10.783	0a
Operating time (min)	12.12 ± 1.09	13.00 ± 1.53	-2.533	0.014a
Catheters survival life (d)	4.73 ± 0.65	4.8 ± 0.75	-0.415	0.679
Hospitalization time (d)	6.21 ± 0.68	6.06 ± 0.73	0.811	0.421
Hospitalization costs (thousand yuan)	46.29 ± 9.65	43.89 ± 10.26	0.865	0.39
Effective	40 (95.2)	13 (72.2)	4.44	0.035a,b

^aSignificant difference between groups.

^bContinuous correction.

IPC: Indwelling pleural catheter; CVC: Central venous catheter.