Table 1.

Description of key categories of patient costs and sources

Main variable	Description	Information source
Pretreatment patient socioeconomic status	Education, employment, income, asset ownership and socioeconomic indicators	Baseline questionnaire capturing socioeconomic status of patient before starting treatment
Direct and indirect costs	Follow-up checks and tests, hospitalisation, relocation, dietary supplements and treatment of adverse events (including ancillary medicines)	Follow-up questionnaire capturing Follow-up tests and related companion costs during past 3 months Hospitalisation and relocation and related companion costs at any time during illness Dietary (nutrition) supplements during treatment Adverse events during treatment
Coping	Sources of funding for patient costs, borrowing, sales of assets, leasing of assets	Baseline and follow-up questionnaires capturing coping strategies during diagnosis and treatment periods