Exploring Shared Decision-Making | 79 3 consistency agreement and 95% confidence interval (CI) were calculated52. Following the OPTION manual, an ICC score of > 0.6 was deemed to be acceptable to continue independent scoring by the two raters48. When ICC was ≤ 0.6, calibration between the raters was continued until ICC > 0.6 was achieved. A Bland-Altman plot was created to examine the consistency between the SDM-Q-9 and SDM-Q-Doc questionnaires, thereby providing insight into potential systematic discrepancies and the extent of the differences in scores. To investigate any potential associations with surgeons’ OPTION-scores, univariate linear regression analyses were conducted for the variables: consultation duration, patients’ age, education level, tumor location, tumor stage, SDM-Q-9 score, SDM-Q-Doc score, CPS, the presence of a caregiver, and caregivers’ OPTION-score. Multivariate linear regression was not performed due to the lack of statistical power.
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