injury: Example: Injury Series from Occupational Health

In ZIM: Zero-Inflated Models (ZIM) for Count Time Series with Excess Zeros

Description

Monthly number of injuries in hospitals from July 1988 to October 1995.

Source

Numbers from Figure 1 of Yau et al. (2004).

References

Yau, K. K. W., Lee, A. H. and Carrivick, P. J. W. (2004). Modeling zero-inflated count series with application to occupational health. Computer Methods and Programs in Biomedicine, 74, 47-52.

Examples

data(injury)
plot(injury, type = "o", pch = 20, xaxt = "n", yaxt = "n", ylab = "Injury Count")
  axis(side = 1, at = seq(1, 96, 8))
  axis(side = 2, at = 0:9)
  abline(v = 57, lty = 2)
  mtext("Pre-intervention",  line = 1, at = 25, cex = 1.5)
  mtext("Post-intervention", line = 1, at = 80, cex = 1.5)

Example output

Loading required package: MASS

ZIM documentation built on May 2, 2019, 7:01 a.m.