I'm grateful to several respondents, on and off list, for a variety of views. In particular, Stephen Senn drew my attention to a special issue of The Annals of Statistics (1987, Vol 15, No 3) - freely available at http://projecteuclid.org/DPubS/Repository/1.0/Disseminate?handle=euclid. aos/1176350472&view=body&content-type=pdf_1 - containing a paper by T.P.Speed and numerous discussants. Lots to digest there, but in the present context Speed seems happy with "anova": "Of course, anova is just a word (or three) ..." Thank you to everyone, Allan This email and any attachments are intended for the named recipient only. Its unauthorised use, distribution, disclosure, storage or copying is not permitted. If you have received it in error, please destroy all copies and notify the sender. In messages of a non-business nature, the views and opinions expressed are the author's own and do not necessarily reflect those of Cefas. Communications on Cefas’ computer systems may be monitored and/or recorded to secure the effective operation of the system and for other lawful purposes. You may leave the list at any time by sending the command SIGNOFF allstat to [log in to unmask], leaving the subject line blank.