sentences:  Altman's publications on statistical education, many co-authored with his long-standing collaborator Martin Bland, are well known among the medical profession, being noted for their practical relevance and clarity.His textbook "Practical Statistics for Medical Research", published in 1991, has sold 50,000 copies in hardback.Altman was the author of over 450 papers in statistical methodology, with 11 being cited over 1,000 times.