Questionnaires used in CODEC study
| Outcome | Questionnaire | Items | Time complete (mins) | Score |
| Chronotype9 | ‘Morningness-Eveningness Questionnaire | 19 | 5 | 16–86 and is categorised into three groups ranging from evening (16-53) to morning (64-86)(36) |
| Physical activity37 | Recent Physical Activity Questionnaire | 57 | 5 | Metabolic cost in metabolic equivalent tasks is calculated – overall and for each section |
| Intake of pathogen associated molecular patterns38 | Pathogen Associated Molecular Patterns Questionnaire | 13 | 5 | 0–5 all questions except questions 9 and 10 (0–4). Total provides the global score. |
| Risk of OSA | STOP-BANG Questionnaire | 8 | 2 | A score of 5–8 indicates a high probability of moderate-severe OSA |
| Excessive daytime sleepiness39 | Epworth Sleepiness Scale | 8 | 2 | A total score between 0–9 indicative of no-daytime sleepiness, 10–12 borderline,>12 describes excessive daytime sleepiness |
| Physical function40 | Duke Activity Status Index | 12 | 5 | The final score is the sum of all those questions returning a ‘yes’ with a higher score indicating a higher level of physical function. |
OSA, obstructive sleep apnoea.