Unbalanced panel data: A survey

Badi H. Baltagi, Seuck Heun Song

Research output: Contribution to journalReview articlepeer-review

79 Scopus citations


This paper surveys the econometrics literature on unbalanced panels. This includes panels with randomly and non-randomly missing observations. In addition, we survey panels with special features including pseudo panels, rotating panels and censored panels.

Original languageEnglish (US)
Pages (from-to)493-523
Number of pages31
JournalStatistical Papers
Issue number4
StatePublished - Oct 2006


  • Censored Panels
  • Missing Observations
  • Pseudo Panels
  • Rotating Panels
  • Unbalanced ANOVA

ASJC Scopus subject areas

  • Statistics and Probability
  • Statistics, Probability and Uncertainty


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