GDP and treatment-related variables in the QUEST–RA study in Europe and other countries, in descending order of GDP
| Country | GDP 2005 per capita US$1000 | Patients taking DMARD ever, % | Delay to start DMARD, months, median | No of DMARD ever taken | Methotrexate ever, % of patients | Prednisone ever, % of patients | Biologicals ever, % of patients | Any DMARD, % of disease duration | Methotrexate, % of disease duration | Biologicals, % of disease duration |
| Europe | ||||||||||
| Ireland | 48.7 | 98.0 | 10.0 | 2.4 | 93 | 71 | 42 | 55.7 | 28.9 | 6.6 |
| Denmark | 47.9 | 99.0 | 10.0 | 2.8 | 86 | 44 | 23 | 65.6 | 25.5 | 2.9 |
| Sweden | 39.6 | 94.0 | 12.0 | 2.8 | 84 | 69 | 33 | 73.7 | 31.1 | 7.2 |
| The Netherlands | 38.9 | 99.0 | 5.0 | 2.3 | 92 | 30 | 23 | 87.6 | 45.0 | 4.4 |
| Finland | 37.3 | 100.0 | 7.0 | 4.0 | 86 | 74 | 17 | 109.6 | 25.7 | 2.2 |
| UK | 37.3 | 95.0 | 12.0 | 2.4 | 83 | 54 | 20 | 51.3 | 24.6 | 1.9 |
| France | 35.0 | 99.0 | 8.0 | 3.7 | 87 | 83 | 53 | 77.0 | 31.0 | 8.9 |
| Germany | 33.9 | 92.0 | 15.0 | 2.7 | 80 | 54 | 29 | 66.5 | 28.8 | 6.3 |
| Italy | 30.5 | 96.0 | 9.0 | 2.4 | 81 | 72 | 27 | 66.9 | 28.9 | 2.9 |
| Spain | 26.1 | 98.0 | 13.0 | 2.8 | 87 | 68 | 27 | 67.4 | 30.9 | 4.4 |
| Greece | 25.6 | 100.0 | 7.0 | 2.9 | 94 | 94 | 54 | 104.2 | 50.8 | 14.6 |
| Hungary | 10.9 | 96.0 | 12.0 | 2.6 | 85 | 58 | 16 | 54.3 | 20.1 | 0.7 |
| Estonia | 10.3 | 98.0 | 12.0 | 2.8 | 83 | 76 | 1 | 67.4 | 23.8 | 0.3 |
| Poland | 8.0 | 99.0 | 4.0 | 3.0 | 89 | 80 | 10 | 64.0 | 26.3 | 0.9 |
| Lithuania | 7.5 | 96.0 | 13.0 | 2.3 | 84 | 97 | 11 | 45.3 | 21.2 | 1.7 |
| Latvia | 7.0 | 98.0 | 24.0 | 2.2 | 92 | 79 | 23 | 52.9 | 28.0 | 1.6 |
| Serbia | 3.5 | 96.0 | 11.0 | 2.0 | 69 | 88 | 2 | 64.6 | 25.2 | 0.3 |
| Kosovo | 3.5 | 100.0 | 3.0 | 2.0 | 82 | 95 | 1 | 82.4 | 36.8 | 0.2 |
| Non-Europe | ||||||||||
| USA | 41.9 | 98 | 9.0 | 2.1 | 85 | 77 | 33 | 83.8 | 39.5 | 8.5 |
| Canada | 35.2 | 95 | 11.0 | 3.0 | 76 | 62 | 28 | 77.6 | 22.1 | 5.0 |
| UAE | 32.4 | 88 | 11.0 | 1.8 | 73 | 56 | 10 | 70.2 | 31.3 | 1.9 |
| Russia | 5.3 | 88 | 10.0 | 1.8 | 73 | 41 | 18 | 64.0 | 28.6 | 9.7 |
| Turkey | 5 | 99 | 12.0 | 2.4 | 89 | 75 | 7 | 75.3 | 33.4 | 0.7 |
| Brazil | 4.8 | 100 | 8.0 | 3.0 | 98 | 81 | 27 | 115.7 | 57.6 | 3.7 |
| Argentina | 4.7 | 88 | 13.0 | 1.5 | 68 | 83 | 3 | 46.3 | 24.5 | 0.5 |
| Total | 97 | 9 | 2.7 | 85 | 71 | 23 | 71.6 | 30.8 | 3.9 |
DMARD, disease-modifying antirheumatic drug; GDP, gross domestic product; UAE, United Arab Emirates.