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The facts behind the figures: a reply to Enderby and Davies (1989).

In 1989, Enderby and Davies discussed the type and pattern of speech and language therapy provision which would be required to service the needs of the speech- and language-impaired population of the UK, on the basis of statistical information drawn from a wide range of sources. In this paper, some methodological issues arising from their study are addressed and an argument made that alternative models of service provision should be considered when planning for future needs.