Sir, – You report on an international study of sleep patterns which found that Irish people sleep more during the week than study participants in any of the other 34 countries surveyed (News, September 14th).
You continue that 70 per cent of the Irish study participants were male against the overall study average of slightly less than 60 per cent.
Methinks I spy a study design flaw here. – Yours, etc,
PAT O’BRIEN,
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Dublin 6.
