Table 1.

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.