deermice {VGAM} | R Documentation

## Captures of Peromyscus maniculatus, also known as deer mice.

### Description

Captures of Peromyscus maniculatus collected at East Stuart Gulch, Colorado, USA.

### Usage

      data(deermice)

### Format

The format is a data frame.

### Details

Peromyscus maniculatus is a rodent native to North America. The deer mouse is small in size, only about 8 to 10 cm long, not counting the length of the tail.

Originally, the columns of this data frame represent the sex (`m` or `f`), the ages (`y`: young, `sa`: semi-adult, `a`: adult), the weights in grams, and the capture histories of 38 individuals over 6 trapping occasions (1: captured, 0: not captured).

The data set was collected by V. Reid and distributed with the CAPTURE program of Otis et al. (1978).

`deermice` has 38 deermice whereas `Perom` had 36 deermice (`Perom` has been withdrawn.) In `deermice` the two semi-adults have been classified as adults. The `sex` variable has 1 for female, and 0 for male.

### References

Huggins, R. M. (1991) Some practical aspects of a conditional likelihood approach to capture experiments. Biometrics, 47, 725–732.

Otis, D. L. et al. (1978) Statistical inference from capture data on closed animal populations, Wildlife Monographs, 62, 3–135.

### See Also

`posbernoulli.b`, `posbernoulli.t`, `fill1`.

### Examples

    head(deermice)
    ## Not run:
    fit1 <- vglm(cbind(y1, y2, y3, y4, y5, y6) ~ sex + age,
                 posbernoulli.t(parallel.t = TRUE), data = deermice, trace = TRUE)
    coef(fit1)
    coef(fit1, matrix = TRUE)

    ## End(Not run)

[Package VGAM version 1.0-3 Index]