In connection to sensory evaluations of foods, chemical or physical measurements of the relevant sensory properties are often searched for. The data available for testing whether some such instrumental measurement is linearly related to a sensory variable usually stem from a factorial experiment rather than from some random sub-population. Thus, to calibrate the two variables properly and to te...

A total of 969 isolates of Campylobacter jejuni originating in the Preston, Lancashire postcode district over a 3-year period were characterized using multi-locus sequence typing. Recently developed statistical methods and a genetic model were used to investigate temporal, spatial, spatio-temporal and genetic variation in human C. jejuni infections. The analysis of the data showed statistically...

The apparent clustering of human cases of influenza A (H5N1) among blood relatives has been considered as evidence of genetic variation in susceptibility. We show that, by chance alone, a high proportion of clusters are expected to be limited to blood relatives when infection is a rare event.