Estimation from retrospectively ascertained data - On what to condition?

Research output: Contribution to journalArticlepeer-review


This paper discusses the estimation of the sojourn time distribution in a latent state using observational data. We assume that observations are available only if an event has occurred. This type of sampling is referred to as retrospective ascertainment. Our focus is the information content of various constructions of the likelihood function.

Original languageEnglish
Pages (from-to)49-63
Number of pages15
JournalJournal of Statistical Planning and Inference
Issue number1
StatePublished - 1 Sep 2005


  • Conditioning
  • Information inequalities
  • Latency period
  • Retrospective ascertainment
  • Semi-parametric efficiency
  • Truncated exponential distribution

ASJC Scopus subject areas

  • Statistics and Probability
  • Statistics, Probability and Uncertainty
  • Applied Mathematics


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