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Table 1 The independent variables in the study’s models

From: Investigation the determinants of pharmaceutical expenditure share of GDP in Iran and selected OECD countries

Category Variable Definition/scale Source of data In which model was used
Macroeconomic factors GDP per capita 1/100 purchasing power parity (PPP) and fixed dollars (2011) World Bank The panel data model of OECD countries and the first and second time-series model of Iran
Health system structure Share of government health expenditures The percent of government health expenditures in total government expenditures WHO The panel data model of OECD countries and the first time-series model of Iran
The percent of government health expenditures in GDP World Bank The second time-series model of Iran
Disease profiles DALY
disability-adjusted life-years
Per year for 100,000 population/this variable reflects the health status of the population World Burden of Disease website The panel data model of OECD countries and the first and second time-series model of Iran
Disease prevalence Number of patients in the total population World Burden of Disease website The second time-series model of Iran
Pharmaceutical system structure Generics share generics volume share of total pharmaceutical market volume The OECD website, Pharmaceutical statistics yearbook of Iran The panel data model of OECD countries and the first and second time-series model of Iran
Pharmaceutical price index Divide total pharmaceutical cost and total volume of numerical consumption annually Pharmaceutical statistics yearbook of Iran The second time-series model of Iran
Innovation New drugs to market annually Number of drug entered in the drug list each year Iran drug list The second time-series model of Iran