Simple capture-recapture models permitting unequal catchability and variable sampling effort

Biometrics. 1994 Jun;50(2):494-500.


We consider two capture-recapture models that imply that the logit of the probability of capture is an additive function of an animal catchability parameter and a parameter reflecting the sampling effort. The models are special cases of the Rasch model, and satisfy the property of quasi-symmetry. One model is log-linear and the other is a latent class model. For the log-linear model, point and interval estimates of the population size are easily obtained using standard software, such as GLIM.

Publication types

  • Comparative Study
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Animals
  • Animals, Wild*
  • Biometry*
  • Lagomorpha
  • Models, Statistical*
  • Population Density*
  • Probability*
  • Software