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M S Ip
Professor M S Ip, University of Hong Kong, Hong Kong, China; msmip@hkucc.hku.hk
STUDY DESIGN
Design:
3-group randomised controlled trial.
Allocation:
unconcealed.*
Blinding:
unblinded.*
STUDY QUESTION
Setting:
sleep laboratories at a university and a regional hospital in Hong Kong, China.
Patients:
101 patients (mean age 46 y, 78% men) with an apnoea-hypopnoea index (AHI) ⩾5–40 and, for those with AHI scores of 5–20, an Epworth Sleepiness Scale (ESS) score >9. Exclusion criteria included excessive sleepiness, unstable medical diseases, and sleep disorders other than OSA.
Intervention:
(i) continuous positive airways pressure (CPAP) at a pretitrated pressure and conservative measures (CM) consisting of advice on sleep hygiene and prescription to attend a weight control programme if necessary (n = 34); (ii) a tailor-made, non-adjustable, Harvold type, oral appliance that …
Footnotes
Source of funding: Health Services Research Committee, Hong Kong.
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