Aim: To identify psychological and socioeconomic predictors of cardiac-rehabilitation (CR) attendance and uncover mechanisms of CR non-attendance.

Design: Quantitative, observational, prospective study. Hypothesis a: Educational-level, comorbidity, anxiety, depression, self-efficacy, cohabitation and distance from residence are predictors of CR attendance.

Hypothesis b: The expected social gradient in CR attendance is explained partly by differential exposure of comorbidity, anxiety, depression, self-efficacy, cohabitation and distance to the rehabilitation clinic.

Design: Quantitative, observational, prospective study. Self-administrated questionnaires, medical journals and telephone interviews will be used for data collecting.

Inclusion Criteria:

• Patients hospitalized with acute coronary syndrome (ACS) to Nordsjællands Hospital (ICD10: DI210-DI219, DI200, DI200B, DI200C, DI23, DI24) will be invited to participate in the survey as an ongoing process during the inclusion period (N=267).

Exclusion Criteria:

• Patients who are not able to submit written consent are excluded. Thus, patients with severe cognitive dysfunction or poor language skills are excluded.

Patients hospitalized with acute coronary syndrome (ACS) to Nordsjællands Hospital (ICD10: DI210-DI219, DI200, DI200B, DI200C, DI23, DI24) will be invited to participate in the survey as an ongoing process during the inclusion period (N=267).