The associations of muscle-strengthening exercise with recurrence and mortality among breast cancer survivors: a systematic review

Table 3 Quality appraisal

Author	Data Collection Method	S1	S2	3.1	3.2	3.3	3.4
Ansa et al., 2015 [34]	Survey, results from lifestyle assessment tool, focus group discussion	✓	✓	✓	X	✓	X
Forbes et al., 2015 [38]	Survey	✓	✓	✓	✓	✓	X
Fortner et al. 2023 [35]	Medical chart review, survey	✓	✓	✓	✓	✓	✓
Tarasenko et al., 2018 [36]	Survey	✓	✓	✓	✓	✓	✓
Troeschel et al., 2023 [37]	Survey	✓	✓	✓	✓	✓	✓

Notes. S1: Are research question(s) clear?; S2: Is data collection appropriate to answer research question(s)?; 3.1: Are participants representative of target population?; 3.2: Are measurements appropriate for the outcome (recurrence/mortality) and exposure (muscle-strengthening exercise participation)?; 3.3: Is outcome data complete?; 3.4 Are confounders (e.g. individual, clinical, contextual characteristics) accounted for in the design and/or analyses?; ✓= Yes; X = No; ? = Can not tell

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