how many of the survey responders would have been aunties and uncles (generic term for an older adult in Singapore, even if unrelated) who are semi or fully retired, and have the time to sit around and drink tea/coffee? Singapore is a wealthy country with nationalised health care, those who are lucky enough to get good careers can often retire in late middle age...
@Pagan_Animist@DeniseGutzmer it's the first thing I search for in any paper that studies people, especially health. it's a very common source of uncorrected bias.
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