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CARD E2 AGAIN.PROBE: Which others? CODE ALL THAT APPLY. IF ASKED:'Long-term' means it has lasted for 12 months or more, or is likely to last for more than 12 months. IF ASKED:Please think what the situation would be like without treatment or correction (e.g. without medication or hearing aid) - except for visual impairment where you should think of what the situation would be like with any glasses or contact lenses that you normally use.
Universe
Adults (18 and over) living in private households in Great Britain (excluding the 'crofting counties' north of the Caledonian Canal).<br>;Adults;National
Sampling
Multi-stage stratified random sample;Sampling is conducted in four stages; from 1993 the sample has been drawn from the Postcode Address File, whereas in previous years it was drawn from the Electoral Register.
Study Type
Repeated cross-sectional study. The BSA survey is conducted annually.