Primary biliary cirrhosis data

Description

Data of the locations of 761 cases of primary biliary cirrhosis in several adjacent health regions of north-eastern England, along with 3020 controls representing the at-risk population, collected between 1987 and 1994. These data were first presented and analysed by Prince et al. (2001); subsequent analysis of these data in the spirit of sparr was performed in Davies and Hazelton (2010). Also included is the polygonal study region.

Usage

data(PBC)

Format

PBC is a dichotomously marked ppp.object.

Acknowledgements

The authors thank Prof. Peter Diggle at Lancaster University (http://www.lancs.ac.uk/staff/diggle/) for providing access to these data.

Source

Prince et al. (2001), The geographical distribution of primary biliary cirrhosis in a well-defined cohort, Hepatology, 34, 1083-1088.

References

Davies, T.M. and Hazelton, M.L. (2010), Adaptive kernel estimation of spatial relative risk, Statistics in Medicine, 29(23) 2423-2437.

Examples

data(PBC)
summary(PBC)
plot(PBC)

Results