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Table 4 QualSyst scores of studies included in the review

From: Decision aids on breast conserving surgery for early stage breast cancer patients: a systematic review

References 1. Question sufficiently described 2. Design evident and appropriate 3. Subject selection method 4. Subject characteristics described 5. If randomized, was procedure reported 6. If blinded to investigators, was it reported 7. If blinded to subjects, was it reported 8. Outcome well defined and robust to measurement/misclassification bias 9. Sample size appropriate 10. Analysis described and appropriate 11. Some estimate of variance reported 12. Controlled for confounding 13. Results reported in sufficient detail 14. Results support conclusions Total
[11] 2 2 1 2 2 2 0 2 2 2 2 2 2 2 0.89
[14] 1 2 1 1 2 0 0 1 2 2 0 1 2 1 0.57
[15] 1 2 2 1 2 0 0 2 2 2 2 1 2 2 0.75
[16] 2 2 2 2 1 0 0 2 1 1 0 0 2 2 0.61
[17] 2 1 2 1 N/A N/A N/A 1 2 2 2 1 2 2 0.82
[18] 2 1 2 2 N/A N/A N/A 1 2 2 2 1 2 2 0.86
[19] 2 1 2 1 N/A N/A N/A 0 2 2 0 1 1 2 0.64