One-day Mind Programme for Women With Breast Cancer

This outcome will be assessed through the European Organisation for Research and Treatment of Cancer Quality of Life Questionnaire-Core 30 (EORTC QLQ-C30). EORTC QLQ-C30 comprises 30 items and scores range from 0 to 100 units for each scale and item: 1. Functional Scales: Higher scores indicate better functioning and quality of life; 2. Symptom Scales/Items: Higher scores indicate a higher level of symptoms or problems.

This outcome will be assessed through the European Organisation for Research and Treatment of Cancer Quality of Life Questionnaire-Breast Cancer 23 (EORTC QLQ-BR23). EORTC QLQ-BR23 scores range 0 to 100 units for each scale and item: 1. Functional Scales/Items (Body Image, Sexual Functioning, Sexual Enjoyment and Future Perspective): Higher scores indicate better functioning and quality of life; 2. Symptom Scales/Items (Systemic Therapy Side Effects, Breast Symptoms, Arm Symptoms and Upset by Hair Loss): Higher scores indicate a higher level of symptoms or problems.

This outcome will be assessed through the Hospital Anxiety and Depression Scale (HADS). HADS is a 14-item questionnaire and each item is scored from 0 to 3 units, resulting in subscale scores ranging from 0 to 21 units: 1. Anxiety subscale: Higher scores indicate higher anxiety level; 2. Depression subscale: Higher scores indicate higher depression level.

This outcome will be assessed through the Comprehensive Assessment of Acceptance and Commitment Therapy Processes (CompACT) 18-item version. Each item of CompACT is rated on a scale from 0 to 6, resulting in subscale scores ranging from 0 to 36 units: 1. Openness to Experience subscale: Higher scores indicate more willingness to experience thoughts and feelings without trying to avoid them; 2. Behavioural Awareness subscale: Higher scores indicate more ability to be aware of and engage in behaviours that are consistent with one's values; 3. Valued Action subscale: Higher scores indicate higher extent to which individuals take actions that are aligned with their personal values.

This outcome will be assessed via Self-Compassion Scale (SELFCS) 26-item version. Each item of SELFCS is rated on a scale from 1 to 5, resulting in subscale scores ranging from 4 or 5 to 20 or 25 units: 1.Self-Kindness subscale(ss): Higher scores indicate higher ability to be kind and understanding towards oneself, especially during difficult times; 2.Self-Judgment ss: Higher scores indicate higher tendency to be overly critical and judgmental of oneself;3.Common Humanity ss: Higher scores indicate higher recognition that suffering and personal failures are part of the shared human experience; 4.Isolation ss: Higher scores indicate higher feelings of isolation and disconnection from others when experiencing suffering; 5.Mindfulness ss: Higher scores indicate higher ability to hold one's painful thoughts and feelings in balanced awareness; 6.Over-Identification ss: Higher scores indicate higher tendency to become overly absorbed and fixated on one's negative emotions and thoughts.

This outcome will be assessed through the EuroQol-5D-5L (EQ-5D-5L). It consists of two main parts: the descriptive system (5 items representing 5 dimensions, that are scored on a scale from 1 to 5 levels of severity: 1. Mobility; 2. Self-care; 3. Usual activities; 4. Pain/Discomfort; 5. Anxiety/Depression) and the EQ visual analogue scale (that records the respondent's self-rated health on a vertical visual analogue scale, where the endpoints are labelled '100 = The best health you can imagine' and '0 = The worst health you can imagine'). Higher scores in both parts indicate higher health-related quality of life and perceived overall health.

This outcome will be assessed through a questionnaire adapted from the UK Cancer Costs Questionnaire (UKCC) Version 2.0. This questionnaire captures the financial burden associated with cancer diagnosis and treatment and has 4 key components: 1. Healthcare Utilization (4 open-ended questions regarding the number of contacts with health professionals outside the hospital setting); 2. Out-of-Pocket Expenses (3 open-ended questions regarding the direct costs incurred by patients, such as medication, travel, and other healthcare-related expenses); 3. Employment and Productivity (5 open-ended questions and 2 multiple-choice questions regarding the impact of cancer on the patient's employment status, including loss of earnings and productivity due to illness); 4. Informal Care (1 open-ended questions regarding the amount of informal care provided by family and friends). Higher scores indicate higher economic impact of cancer and its treatment on patients.

This outcome will be assessed through a final evaluation form with 8 items rated on a 5-point Likert scale (1 = Totally Disagree; 5 = Totally Agree) regarding several aspects of the programme (e.g. expectations, satisfaction, usefulness). Higher scores indicate higher acceptance of the intervention by patients.

This outcome will be assessed through direct observation of the patients during the intervention and via attendance records. Higher number of interactions during the intervention and higher attendance indicate higher adherence to the intervention.

This outcome will be assessed via attendance records and it will involve calculating the percentage of patients who discontinue the programme before its completion. A higher percentage will indicate higher dropout rate.

This outcome will be assessed through the Major Life Event Questionnaire (MLEQ). This Portuguese questionnaire comprises 23 items that represent major life events that may occur in a person's life (e.g. marriage, pregnancy, serious illness). For each item, participants are asked to report the occurrence (yes = 1) or absence (no = 0) of the specific event in the previous months (the number of months depends on the moment of assessment). The higher the score (min: 0; max: 23), the higher the number of major life events in the previous months.

This outcome will be assessed through a questionnaire with 47 open-ended or multiple-choice questions regarding sociodemographic (e.g. age) and clinical data (e.g. cancer stage). This data will be important to check inclusion/exclusion criteria.

This outcome will be assessed through the Awareness of Contextual Therapies Processes Scale (ACTPS). ACTPS is 9-item tool used to measure the processes involved in contextual therapies, such as Acceptance and Commitment Therapy (ACT). Each item is rated on a 5-point Likert scale (1 = Strongly Disagree; 5 = Strongly Agree), resulting in total scores ranging from 9 to 45 units, the higher the score, the higher the awareness level.

Yes-no single question about the efficacy expectancy: "Do you believe that the intervention will bring benefits to your quality of life and mental health?"

Multiple choice question regarding the frequency of home practice in the last 3 months.