Gut microbiota in patients with prostate cancer: a systematic review and meta-analysis

BMC Cancer

Table 2 Quality assessment of studies included for the meta-analysis

Study (year)	Quality assessment criteria
Study (year)	Selection (4)	Comparability (2)	Outcome (3)	Quality score
Alanee et al. 2019 [24]	★★	★★	★★★	7
Kalinen et al. 2021 [29]	★★★	★★	★★	7
Katz et al. 2022 [30]	★★	★★	★★	6
Liss et al. 2018 [28]	★★	★★	★★★	7
Sfanos et al. 2018 [27]	★★★	★★	★★★	8
Smith et al. 2021 [26]	★★	★★	★★★	7
Zhong et al. 2022 [25]	★★★	★★	★★★	8

The quality of the studies was evaluated using the Newcastle–Ottawa Quality Assessment Scale for observational studies. ★★ 2 points. ★★★ 3 points. ★★★★ 4 points

ISSN: 1471-2407