By the time he gave evidence at Sally Clark's trial, Meadow claimed to have found 81 cot deaths which were in fact murder, but he had destroyed the data.
[16] Amongst the prosecution team was Meadow, whose evidence included a
soundbite which was to provoke much argument: he testified that the odds against two cot deaths occurring in the same family was 73,000,000:1, a figure which he erroneously obtained by squaring the observed ratio of live-births to cot deaths in affluent non-smoking families (approximately 8,500:1). In addition he extrapolated his erroneous figures stating that the 1 in 73,000,000 incidence was only likely to occur once every hundred years in England, Scotland and Wales. He further illustrated his miscalculation by stating that the very unlikely odds were the same as successfully backing to win an 80 to 1 outsider in The Grand National for four successive years.
[17] The jury returned a 10/2 majority verdict of "guilty".