Data elementComments, coding for data extraction
Ref id
First author, year
Companion ref id (if applicable)
Author contacted?1 = yes, 0 = no
Country
Type of StudyE.g. Cost-effectiveness analysis, cost analysis
Population CharacteristicsE.g. type and severity of chronic autoimmune disease, ethnic and age distribution
Perspective
Costs of adverse events and care
Currency
Year of costing data
Source of cost data
Costing itemE.g. myelosuppression, ICU stay, etc.
Type of costing dataE.g. one time annual cost
Cost
Converted to USD 2008 (inflation and conversion rate)Must use the PPP for this
Costs of testing
CurrencyE.g. USD
Year of costing data
Source of cost data
Type of test
Costing details
Cost
Converted to USD 2008 (inflation and conversion rate)
Cost of treating drug-associated complications
Currency
Year of costing data
Source of cost data
Type of druge.g., AZA, 6-MP, AZA & 6-MP
Costing iteme.g., myelosuppression due to AZA
Type of costing dataE.g. one time annual cost
CostDenomination and year
Converted to USD 2008 (inflation and conversion rate)Must use the PPP for this
Other costs reported in study?

Abbreviations: AZA = azathioprine; 6-MP = 6-mercaptopurine; ICU = intensive care unit; PPP = purchasing power parities and the consumer price index, as described in the methods; Ref id = unique reference identification number; TPMT = thiopurine methyltransferase; USD = United States dollars

From: Appendix B, Data extraction and related forms

Cover of Assessment of Thiopurine Methyltransferase Activity in Patients Prescribed Azathioprine or Other Thiopurine-Based Drugs
Assessment of Thiopurine Methyltransferase Activity in Patients Prescribed Azathioprine or Other Thiopurine-Based Drugs.
Evidence Reports/Technology Assessments, No. 196.
Booth RA, Ansari MT, Tricco AC, et al.

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