publications: Number of publications produced by Ph.D biochemists
In negbin1: Negative Binomial 1 Regression

Description Usage Format Source References Examples

Data on the number of publications produced by Ph.D. biochemists, taken from Long (1990).

1	data("publications")

A data frame containing 915 observations on 6 variables.

articles: integer. articles in the last three years of Ph.D.
gender: factor. coded one for females.
married: factor. coded one if married.
kids: integer. number of children under age six.
prestige: numeric. prestige of Ph.D. program
mentor: integer. articles by mentor in last three years

Supplementary material for Long (1990), in Stata format availlable at http://www.indiana.edu/~jslsoc/stata/socdata/couart2.dta.

Long, J. Scott (1990). "The origins of sex differences in science", Social Forces, 68:1297–1315. Long, J. Scott (1997). Regression Models for Categorical and Limited Dependent Variables. Thousand Oaks, California: Sage.

data("publications", package = "negbin1")

## Poisson model for the number of publications
poi <- glm(articles ~ gender + married + kids + prestige + mentor,
  family = "poisson", data = publications)
summary(poi)

## NB1 model for the number of publications
nb11 <- negbin1(articles ~ gender + married + kids + prestige + mentor,
   data = publications)
summary(nb11)