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. 2023 Mar 1;11(2):qfac019. doi: 10.1093/sexmed/qfac019

Table 2.

Quality assessment of included studies.

Year Study Study design Sample Size Inclusion and exclusion Randomization Statistic
Control Experiment unit No. Calculation Criteria Exclusion No. Randomization Confounder Blinding Outcome measure Methods, software Assumption
2017 Chen26 1 1 1 0 1 0 1 1 0 0 1 1 0
2021 Liang27 1 1 1 0 1 0 1 1 0 0 1 1 0
2020 Song32 1 1 1 0 1 1 1 0 0 0 1 1 0
2018 Li20 1 1 1 0 1 0 1 1 0 0 1 1 0
2020 Wang28 0 1 0 0 1 0 0 0 0 0 1 1 0
2019 Liu31 1 1 1 0 1 0 1 1 0 0 1 1 0
2018 Ouyang19 1 1 1 0 1 0 1 0 0 0 1 1 0
2022 Liang29 1 1 0 0 0 0 0 1 0 0 1 0 0
2018 Zhu30 1 1 1 0 1 0 0 1 0 0 1 1 0
2020 Yang33 1 1 1 0 1 0 1 1 0 0 1 1 0
2019 Ouyang34 1 1 1 0 1 1 1 1 0 0 1 1 0
Year Study Animals Procedures Results ICP/MAP Cell Exosome
Species Further What When Where Why Summary Nommalization by MAP Images of traces APO test a Phenotype b Label Morphology Structural changes Score
2017 Chen26 1 1 1 1 1 1 1 1 1 0 0 1 1 1 20
2021 Liang27 1 0 1 1 1 1 1 1 1 0 1 1 1 1 20
2020 Song32 1 0 1 1 0 1 1 1 1 1 1 1 1 1 20
2018 Li20 1 0 1 1 0 1 1 1 1 0 0 1 1 1 18
2020 Wang28 1 0 1 1 0 1 1 1 1 0 1 1 1 1 15
2019 Liu31 1 0 1 1 0 1 1 1 1 0 0 1 1 1 18
2018 Ouyang19 1 0 1 1 0 1 1 1 1 0 1 1 1 1 18
2021 Liang29 1 0 1 0 0 1 1 1 1 0 0 1 1 1 13
2018 Zhu30 1 0 1 1 0 1 1 1 1 0 0 1 1 1 17
2020 Yang33 1 0 1 1 0 1 1 1 1 0 1 1 1 1 19
2019 Ouyang34 1 0 1 1 1 1 1 1 1 1 0 1 1 1 21

Abbreviation: ICP/MAP, intracavernous pressure/mean artery pressure.

aApomorphine test to verify erectile dysfunction before administration of exosomes.

bStem cell phenotype identification.