A Systematic Review and Meta-Analysis to Assess Patient-Reported Outcomes after Lung Cancer Surgery

Table 1

Results of the risk of bias assessment using the Downs and Black assessment tool.

Study ID	Reporting; (10)*	External validity; (3)*	Bias; (7)*	Confounding; (6)*	Power; (5)*	Total; (31)*
Balduyck et al. [10]	5	1	5	2	5	18
Baysungur et al. [11]	6	0	5	2	4	17
Brunelli et al. [12]	5	1	5	0	4	15
Ilonen et al. [13]	5	1	4	2	4	16
Li et al. [14]	8	1	4	3	4	20

∗Maximum number can be scored in that criterion.