Napping behaviour in sleep apnoea:– a transcultural study in older people

INTERVENTION: 1. An early CPAP group: CPAP + best supportive care (BSC) for 12 weeks 2. A delayed CPAP group: BSC for 6 weeks initially then CPAP + BSC will be combined for another 6 weeks. BSC includes normal medical treatment and information about weight reduction, smoking cessation, reducing alcohol consumption, change in sleeping posture and sleep hygiene. CONDITION: Obstructive sleep apnoea syndrome (OSAS) ; Nervous System Diseases ; Obstructive sleep apnoea PRIMARY OUTCOME: Change in weekly nap frequency and duration every 6 weeks in both groups SECONDARY OUTCOME: 1. CPAP compliance during CPAP intervention in both groups; 2. Change in Epworth Sleepiness Scale (ESS) and Pittsburgh Sleep Quality Index (PSQI) scores; 3. Change in RAND‐36 scores; 4. Change in Hospital Anxiety and Depression Scale (HADS) scores; Measured every 6 weeks in both groups; 5. Change in reaction time of Psychomotor Vigilance Task (PVT) assessed post intervention INCLUSION CRITERIA: 1. Aged 60 years and over 2. Have apnoea‐hypopnoea index (AHI) = 15 3. Nap at least 3 times per week with average nap duration of at least 30 minutes