DAPT Strategy in HBR Patients Undergoing Complex PCI Following ACS: Second-Phase Beta Testing of a Patients Decision Aid

Change in Antiplatelet Strategy Knowledge Score After PDA Use

Change in total score on an adapted OHRI knowledge questionnaire assessing understanding of bleeding and thrombotic risks and DAPT options, comparing pre-PDA vs post-PDA completion.

Time frame: Baseline (pre-PDA, Day 0) and immediately post-PDA completion (Day 0, index hospitalization).

Preparation for Decision-Making (PrepDM) Score After PDA Use

Total score on the Preparation for Decision Making (PrepDM; OHRI) questionnaire completed after PDA use. Higher scores indicate greater perceived preparedness to make a decision with the clinician.

Time frame: Immediately post-PDA completion (Day 0, index hospitalization).

Patient Acceptability Score of the PDA in Routine Clinical Use

Total score on an OHRI acceptability questionnaire completed after PDA use, reflecting perceived relevance, clarity, length, and overall acceptability in the clinical setting.

Time frame: Immediately post-PDA completion (Day 0, index hospitalization).

Patient Refusal Rate to Use the PDA and Reasons for Refusal

Number and proportion of eligible patients who personally refuse participation/PDA use, and categorization of documented reasons for refusal (e.g., not interested, too tired, overwhelmed, language barriers, time constraints).

Time frame: Pre-intervention (at the time of the consent request, prior to PDA delivery, during the index hospitalization).

Agreement Between Patient-Preferred Antiplatelet Strategy and Strategy Prescribed at Hospital Discharge

Proportion of agreement between (a) the antiplatelet strategy preferred by the patient as identified through the PDA and (b) the antiplatelet strategy documented on the discharge prescription/orders.

Time frame: At hospital discharge (index hospitalization), comparing the patient preference recorded immediately after PDA completion with the antiplatelet strategy on the discharge prescription/orders (also post-PDA completion).

Clinician Usability of the PDA (French System Usability Scale, F-SUS)

Total score on the French System Usability Scale (F-SUS) completed by clinicians after using the PDA with an included patient in routine clinical care. Higher scores indicate better usability.

Time frame: Day 0 (immediately after PDA use with an included patient)

Clinician Refusal Rate to Use the PDA and Reasons for Non-Use

Number and proportion of eligible patient encounters in which the clinician declines to use the PDA when asked, along with categorization of documented reasons (e.g., time constraints, clinical instability, workflow barriers, clinician preference).

Time frame: Pre-intervention (at the time the clinician is asked whether it is appropriate to approach the patient and offer the PDA, prior to patient approach and prior to PDA delivery, during the index hospitalization).