Surgical resection of nodular ground-glass opacities without percutaneous needle aspiration or biopsy

BMC Cancer

Table 4 Hospital stays, waiting times, and costs for patients undergoing surgical resection with and without tissue diagnosis

	Without tissue diagnosis	With tissue diagnosis	p-value
	(n =305)^a	(n =26)	p-value
Days of hospitalization (days)	6.8 ± 6.1	9.8 ± 4.3	0.015
The time interval before surgery (days)	2.5 ± 2.9	8.8 ± 8.5	0.001
Total costs (US dollars)	9271 ± 4430	11817 ± 2479	0.004

Unless otherwise specified, data are expressed as mean values ± standard deviations.
^aData were evaluated for 305 operations in 300 patients, which included 330 nGGOs. Five patients had surgical resection twice for different nGGOs.

ISSN: 1471-2407