NOCCA New

NOCCA cohort dashboard

A compact overview of cohort scale, follow-up, occupational classification, and cancer outcomes. The charts below are drawn directly in JavaScript.

Individuals

20.8M
Population-based cohort

Cohort assembled from Nordic population and census data with harmonised variables across countries.

Person-years

557M
Total follow-up time

Cohort follow-up accumulated across Nordic population and cancer registry linkages over time.

Cancer cases

4.5M
Incident cancers

Linkage to national cancer registries enables near-complete ascertainment of cancer incidence.

Occupations

59
Harmonised occupational groups

Occupational information derived from national censuses and mapped to a common Nordic classification.

Cancer sites

75
Cancer sites analysed

Based on both primary site and codes for histology/morphology and/or behavioural code.

Cohort size by country

Accumulated cancer cases by period

Cohort structure

The NOCCA cohort integrates population, census, and cancer registry data to support comparative occupational cancer analyses across countries.
Multi-country harmonisation

Follow-up & linkage

Follow-up is performed through national registries (population and cancer) enabling high completeness and consistent outcome definitions.
  • Follow up 1961-2020
  • Start: first year after census year
  • End: death, emigration, or 2017-2020

Variables & groupings

Occupational groups are harmonised (59 categories) and can be complemented with socioeconomic position (SEP) groupings and period-specific stratification.
  • Optional: SEP pyramid / categories
  • Optional: sex-specific analyses

Cancer sites

Text
Cancer incidence analyses cover 75 cancer sites defined using harmonised ICD coding across Nordic cancer registries.
  • Includes major solid tumours
  • Includes haematological malignancies
  • Comparable definitions across countries
76 cancer sites