Table 2 Instruments and variables collected in both study arms
Variable | Instrument/indicator | Data source | Timeline |
|---|---|---|---|
Sociodemographic details: age, sex, gender, occupation, etc | Ad-hoc questionnaire | Online/offline self-reported questionnaire | Baseline |
HEALTH AND WELLBEING MEASURES | |||
Quality of life | EQ-5D-5L [27] | Online/offline self-reported questionnaire | Baseline, 6, 12 and 18 months |
Mental health: depression, anxiety, stress | Depression Anxiety Stress Scales 21 (DASS-21) [28] | ||
Frailty | Self-Administered Multidimensional Prognostic Index Short Form (SELFY-MPI-SF) [29] | ||
Subjective comfort in households | European Statistics on Income and Living conditions survey (EU-SILC) [30] | ||
Comorbidities | International Consortium for Health Outcomes (ICHOM) Overall Adult Health set [31] | ||
Lifestyle behaviour: Body Mass Index (BMI), alcohol consumption, smoking status | ICHOM Overall Adult Health set [31] | ||
Lifestyle behaviour: Physical activity | One item of the Internal Physical Activity Questionnaire (IPAQ) [32] | ||
Loneliness | University of California, Los Angeles (UCLA) 3-item Loneliness Scale [33] | ||
Control over life and social support | Adult Social Care Outcomes Toolkit [34] | ||
Health care use | Self-management resource center (SMRC) Health Care Utilization questionnaire [35] | ||
Decompensation of chronic disease | Number of diagnosed exacerbations, all health settings (emergencies, acute units, hospitalization, primary care) | Online/offline self-reported questionnaire (if available, direct extraction from Electronic Health Records) | Baseline, 6, 12 and 18 months |
Readmissions | Admissions to the emergency department, acute units or regular hospitalisation | ||
Use of primary attention services | Visits to the primary attention services distinct from those aimed at renewing the prescriptions | ||
ENERGY POVERTY RELATED MEASURES | |||
Energy poverty indicators | European Statistics on Income and Living conditions survey (EU-SILC) [30] | Online/offline self-reported questionnaire | Baseline, 6, 12 and 18 months |
Attitudes/coping | Self-reported scale, three items of the European Social Survey [36], two items of the Climate Change Worry Scale [37] | Online/offline self-reported questionnaire | |
ENERGY EFFICIENCY EVALUATION | |||
Energy consumption | On grid (e.g. electricity, gas, heat) and off-grid (e.g. bottled gas, coal) energy consumption | Online/offline self-reported questionnaire, if possible, smart meters or energy provider | Baseline, 6, 12 and 18 months |
Household income spent on different sources of energy | % of income/Euros | Online/offline self-reported questionnaire and, if possible, energy provider | |