All variables collected using the three different questionnaires
| Variable | Measure |
|---|---|
| GP-related variables (paper-based questionnaire) | |
| Age | Date of birth |
| Sex | Sex |
| Place of graduate training | City, country |
| Place of postgraduate training | City, country |
| Type of practice | Independent/on-a-contract GP, group practice, healthcare network |
| Years of practice 1 | Year medical diploma was obtained |
| Years of practice 2 | Year started independent practice |
| Other activity | Aside from medical practice (eg, research; teaching; practice in a specific context, such as prison, hospice for elders, school in a company, etc) |
| City/countryside | Location of the practice (urban, sub-urban, rural) + zipcode |
| Number of consultations | Mean number of consults per week |
| Mean age of patients | Mean age of patients in the practice population as determined using the electronic filing or electronic billing system |
| Subspecialty | Medical board specialty other than that of General Internal Medicine |
| Patient-related variables assessed through the GP survey (paper-based questionnaire) | |
| Age | Date of birth |
| Sex | Sex |
| Visits to GP in the last year | Number of visits to the GP in the last 12 months |
| Visits to GP in the last month | Number of visits to the GP in the last month |
| Time followed by GP | Number of years that the patient has been treated by the GP |
| Hospitalisations | Number of hospitalisations in the last 12 months |
| Number of chronic conditions | Number of chronic conditions from the list provided |
| List of chronic conditions | List of chronic conditions by decreasing order of importance |
| Conditions important to the patient | List of the 3 chronic conditions the most important to the patient, according to the GP |
| Severity of each chronic condition | Evaluated using the cumulative illness rating scale |
| Treatment | Current treatment plan |
| Renouncement | Conditions voluntarily left untreated or suboptimally treated by the GP |
| Interdisciplinarity | Specialist MD/nurse/physiotherapist/rehabilitation therapist/caregiver |
| Treatment burden | Subjective estimation of the patient's treatment burden on a 0 to 10 scale (0= burden not important at all; 10= very important burden) |
| Patient-related variables assessed through the patient survey (telephone interview questionnaire) | |
| Age | Date of birth |
| Sex | Sex |
| Marital status | Patient's marital status (single, married, separated or divorced, widow(er)) |
| Place of education | City, country |
| Mother tongue | Patient's first language(s) |
| Education | Highest schooling level achieved (primary school, secondary school, practical training, high school or equivalent, superior degree non-university, university, other) |
| Size of the household/living situation | Number of adults (≥18 years old) and children (<18 years old) living with the patient |
| Number of MDs | Number of medical doctors (GPs and specialists) involved in the patient's treatment |
| Medical and social assistance | Does the patient receive medical and/or social assistance? |
| Pillbox | Use of a pillbox (Y/N) |
| Interdisciplinarity | Cleaning help or meal delivery system |
| Health literacy | Health literacy will be assessed using the short 6-item HLS-EU questionnaire |
| Prioritisation | Most important and second most important conditions |
| Quality of life | Quality of life will be assessed using the EQ-5D-3L questionnaire |
| SES | SES will be assessed using the DipCare questionnaire |
| Treatment burden | Treatment burden will be assessed using the treatment burden questionnaire |
GP, general practitioner; HLS-EU, The European Health Literacy Survey; SES, socioeconomic status.