Digital chest drainage system versus traditional chest drainage system after pulmonary resection: a systematic review and meta-analysis

Table 1 Characteristics of Included Studies

Studies	Year	Country	Number of patients		Study design	Study quality
Studies	Year	Country	Digital	Traditional	Study design	Study quality
Takamochi	2017	Japan	135	164	RCT	High (5)
Waele	2017	Canada	53	50	RCT	High (5)
Miller	2016	USA	20	40	POS	S3; C1; O3
Shoji	2016	Japan	112	121	ROS	S3; C1; O3
Filosso	2015	Italy	40	40	POS	S3; C1; O3
Gilbert	2015	Canada	87	85	RCT	High (5)
Pompili	2014	International	191	190	RCT	High (5)
Brunelli	2009	Italy	82	77	RCT	High (4)

RCT randomized control trial, ROS retrospective observational study, POS prospective observational study

ISSN: 1749-8090