NDB - sporedata/researchdesigneR GitHub Wiki

General description

The Japanese National Database of Health Insurance Claims and Specific Health Checkups (NDB) is a large national administrative claims database. The NDB covers more than 126 million people and 1.9 billion electronic claims annually, with data from 99% of the hospitals in Japan, thus characterizing nation-wide completeness.

Variable categories

  • Demographic information - age group, sex, race, anonymized insurer ID, outcome (death or survival), institution's secondary medical

Limitations

  • Lack of access to important data
  • Unclear validity of the data coding
  • Lacks the exact date for medical care and pharmaceutical dispensing.
  • Difficulty of making causal inferences with retrospective collected data
  • Cannot determine the order of MTX dispensing and virus examination in the same month

Related publications

Data access