Table 2 Distribution of cases and controls by study center
Lung cancer cases | Head and neck cancer cases | Controls | |||||||
|---|---|---|---|---|---|---|---|---|---|
Study center | N | % | Period of diagnosis | N | % | Period of diagnosis | N | % | Recruitment period |
Bas Rhin | 398 | 13.6 | 06.2004-09.2006 | 261 | 10.8 | 06.2004-06.2007 | 469 | 13.2 | 07.2004-09.2007 |
Calvados | 354 | 12.1 | 03.2003-09.2006 | 247 | 10.2 | 03.2003-06.2007 | 462 | 13.0 | 04.2003-09.2007 |
Doubs | 149 | 5.1 | 05.2004-06.2006 | 51 | 2.1 | 05.2004-06.2006 | 143 | 4.0 | 06.2004-09.2006 |
Haut Rhin | 73 | 2.5 | 11.2004-09.2006 | 45 | 1.9 | 11.2004-10.2006 | 118 | 3.3 | 12.2004-01.2007 |
Hérault | 334 | 11.4 | 08.2001-01.2006 | 256 | 10.6 | 08.2001-10.2006 | 450 | 12.7 | 09.2001-01.2007 |
Isère | 476 | 16.3 | 08.2001-01.2006 | 288 | 11.9 | 08.2001-10.2006 | 501 | 14.1 | 09.2001-01.2007 |
Loire Atlantique | 350 | 12.0 | 08.2004-09.2006 | 389 | 16.1 | 08.2004-06.2007 | 404 | 11.4 | 09.2004-09.2007 |
Manche | 320 | 10.9 | 03.2003-09.2006 | 264 | 10.9 | 03.2003-06.2007 | 312 | 8.8 | 04.2003-09.2007 |
Somme | 321 | 11.0 | 04.2002-06.2006 | 430 | 17.8 | 04.2002-10.2006 | 499 | 14.0 | 05.2002-01.2007 |
Vendée | 151 | 5.2 | 08.2004-09.2006 | 184 | 7.6 | 08.2004-06.2007 | 197 | 5.5 | 09.2004-09.2007 |
Total | 2926 | 100.0 | 2415 | 100.0 | 3555 | 100.0 | |||