Cross-sectional average length of life by parity: Country comparisons

Ryohei Mogi, Ester Lazzari, Jessica Nisen, Vladimir Canudas-Romo

Research output: Contribution to journalJournal articleResearchpeer-review

13 Downloads (Pure)


This study aims to present an alternative measure of fertility—cross-sectional average length of life by parity (CALP)—which: (1) is a period fertility indicator using all available cohort information; (2) captures the dynamics of parity transitions; and (3) links information on fertility quantum and timing together as part of a single phenomenon. Using data from the Human Fertility Database, we calculate CALP for 12 countries in the Global North. Our results show that women spend the longest time at parity zero on average, and in countries where women spend comparatively longer time at parity zero, they spend fewer years at parities one and two. The analysis is extended by decomposing the differences in CALPs between Sweden and the United States, revealing age- and cohort-specific contributions to population-level differences in parity-specific fertility patterns. The decomposition illustrates how high teenage fertility in the United States dominates the differences between these two countries in the time spent at different parities.

Original languageEnglish
JournalPopulation Studies
Issue number1
Pages (from-to)1-14
Publication statusPublished - Mar 2023
Externally publishedYes


  • cohort analysis
  • decomposition
  • fertility by parity
  • fertility measurement
  • multistate life table
  • period analysis
  • Cross-Sectional Studies
  • United States
  • Humans
  • Longevity
  • Pregnancy
  • Fertility
  • Adolescent
  • Female
  • Birth Rate
  • Developing Countries
  • Parity
  • Population Dynamics


Dive into the research topics of 'Cross-sectional average length of life by parity: Country comparisons'. Together they form a unique fingerprint.

Cite this