Location, latitude and number of giant cell arteritis cases recruited
| Location | Latitude | Number of cases |
| Australia | 1881 | |
| Victoria (Melbourne) | −37.813628 | 731 |
| New South Wales (Sydney) | −33.868820 | 467 |
| Queensland (Brisbane) | −27.469771 | 79 |
| Tasmania (Hobart) | −42.882138 | 83 |
| South Australia (Adelaide) | −34.928499 | 290 |
| Western Australia (Perth) | −31.950527 | 199 |
| Australian Capital Territory (Canberra) | −35.280937 | 32 |
| New Zealand | 218 | |
| Wellington (Wellington) | −41.286460 | 57 |
| Canterbury (Christchurch) | −43.532054 | 92 |
| Otago (Dunedin) | −45.878760 | 69 |
| Europe | 125 | |
| The Netherlands (Rotterdam) | 51.924420 | 98 |
| Germany (Heidelberg) | 49.398752 | 27 |
| Total | 2224 |
Latitude coordinates from http://www.latlong.net.