Cancer types
In our study, we grouped childhood cancers into six categories based on
the National Cancer Registry Annual Report: leukemia (C91-C95), brain
and central nervous system cancer (C70-C72), non-Hodgkin’s lymphoma
(C82-C85, C96), bone and articular cartilage cancer (C40-C41),
mesothelioma soft tissues (C45-C49), and the remaining group of ‘other’
cancers.
We classified cancer treatment into 3 phases: early, middle, and late
phases. The early phase is the first year following diagnosis, the
middle phase includes the second to the fourth year following diagnosis,
and the late phase is the fifth year following diagnosis. The early
phase has been further divided into 3, 6, 9, and 12 months.