Table 1

‚ÄÉMethod of data collection in each country

Countries by continentNo. of doctors involved in data collectionStratification of samplingReporting time
Europe
France835Region, age of doctor, community size, activity level, sex of doctor, environment (typology of areas)7 consecutive days per quarter
Germany2806Region, specialty, community size7 consecutive days per quarter
Spain850Region, specialty, community size7 consecutive days per quarter
UK500Region, year of doctor qualificationDaily throughout year (computerised GP records)
South America
Argentina470Region, specialty7 consecutive days per quarter
Brazil1155Region, specialty5 consecutive days
Mexico1050Region, specialtyMinimum of 4 consecutive days and maximum of 6 per quarter
North America
USA1227 physicians report per month; 3678 physicians report per quarterTwo staged stratified cluster, randomly drawn2 consecutive days per quarter
Canada652Region, specialty2 consecutive days per quarter