Generalized linear model of sex, voluntary work, marital status, education, and income on offspring number on the basis of a Poisson error structure.

Residual deviance: 3475.1 on 4711 df;Education: 1 = less than one year of college, 2 = 1 to 3 year college, 3 = bachelor degree, 4 = master degree and higher; Marital status: 1 = currently married, 2 = separated, 3 = divorced, 4 = widowed, 5 = never married.