Overview of hot spell and end-of-study questionnaires
| Topic | Data description | Hot spell | End-of-study |
| Sleeping behaviour | Sleep posture Bedwear, bedding and body coverage Windows, curtains and ventilation | ● | ● |
| Health Utilisation Index (HUI) | Frequency of GP, A&E and pharmacy usage | ● | ● |
| Functional Outcomes of Sleep Questionnaire (FOSQ) | Difficulty of undertaking different activities due to sleepiness | ● | ● |
| Quality of life (EQ5D) | Mobility, self-care, routine activities, pain/discomfort, mood and general health | ● | ● |
| Pittsburgh Sleep Quality Index (PSQI) | Timing of sleep period Reasons and frequency of sleep difficulties Impact on daytime functioning | ● | |
| Warwick-Edinburgh Mental Well-being Scales (WMWBS) | Feelings and thoughts and frequency of these | ● | |
| Participant experience | Participant satisfaction, likelihood of recommending the study to others, participation in future, related research | ● |