Letter
Ten Seconds to Inject
1 July 1999
Macneil of Barra (Letters, 29 July) manifests the very misunderstanding about probability that my example was meant to illustrate. The example involves a disease that affects 1 in 10,000 people in the population being studied. The test for the disease is 99 per cent reliable in the sense that it gives correct (negative) results for 99 per cent of healthy people and false positive results for the other...
