sparr (version 2.1-12)

pbc: 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.

Format

pbc is a dichotomously marked ppp.object, with locations expressed in UK Ordnance Survey Coordinates (km).

Acknowledgements

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

References

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

Examples

# NOT RUN {
data(pbc)
summary(pbc)
plot(pbc)

# }