Journal | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | Total |
---|---|---|---|---|---|---|---|---|---|---|---|
Am J Med | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
   qualitative empirical articles | 0 | 1 | 0 | 0 | 0 | 1 | 2 | 1 | 0 | 0 | 5 |
   total empirical articles | 287 | 242 | 303 | 267 | 267 | 299 | 326 | 306 | 264 | 259 | 2820 |
   percentage qualitative | 0.0 | 0.4 | 0.0 | 0.0 | 0.0 | 0.3 | 0.6 | 0.3 | 0.0 | 0.0 | 0.2 |
Ann Intern Med | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
   qualitative empirical articles | 2 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 2 | 7 |
   total empirical articles | 261 | 242 | 308 | 308 | 315 | 267 | 296 | 282 | 266 | 255 | 2800 |
   percentage qualitative | 0.8 | 0.4 | 0.0 | 0.0 | 0.0 | 0.4 | 0.0 | 0.0 | 0.4 | 0.8 | 0.3 |
Arch Intern Med | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
   qualitative empirical articles | 1 | 1 | 1 | 1 | 0 | 1 | 3 | 0 | 1 | 0 | 9 |
   total empirical articles | 278 | 359 | 335 | 309 | 301 | 302 | 312 | 288 | 280 | 261 | 3025 |
   percentage qualitative | 0.4 | 0.3 | 0.3 | 0.3 | 0.0 | 0.3 | 1.0 | 0.0 | 0.4 | 0.0 | 0.3 |
BMJ | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
   qualitative empirical articles | 2 | 3 | 8 | 14 | 7 | 2 | 2 | 1 | 0 | 2 | 41 |
   total empirical articles | 677 | 624 | 592 | 676 | 754 | 622 | 600 | 534 | 565 | 695 | 6339 |
   percentage qualitative | 0.3 | 0.5 | 1.4 | 2.1 | 0.9 | 0.3 | 0.3 | 0.2 | 0.0 | 0.3 | 0.6 |
CMAJ | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
   qualitative empirical articles | 0 | 2 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 6 |
   total empirical articles | 268 | 241 | 223 | 247 | 251 | 237 | 266 | 227 | 212 | 206 | 2378 |
   percentage qualitative | 0.0 | 0.8 | 0.9 | 0.8 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.3 |
J Intern Med | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
   qualitative empirical articles | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
   total empirical articles | 146 | 151 | 118 | 124 | 142 | 136 | 121 | 124 | 123 | 110 | 1295 |
   percentage qualitative | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
JAMA | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
   qualitative empirical articles | 2 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 4 |
   total empirical articles | 649 | 675 | 664 | 654 | 563 | 456 | 491 | 451 | 463 | 504 | 5570 |
   percentage qualitative | 0.3 | 0.0 | 0.0 | 0.0 | 0.4 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 |
Lancet | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
   qualitative empirical articles | 0 | 2 | 2 | 1 | 0 | 0 | 0 | 2 | 1 | 0 | 8 |
   total empirical articles | 931 | 823 | 837 | 881 | 922 | 850 | 738 | 656 | 567 | 600 | 7805 |
   percentage qualitative | 0.0 | 0.2 | 0.2 | 0.1 | 0.0 | 0.0 | 0.0 | 0.3 | 0.2 | 0.0 | 0.1 |
NEJM | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
   qualitative empirical articles | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
   total empirical articles | 465 | 448 | 446 | 461 | 508 | 634 | 636 | 611 | 615 | 610 | 5434 |
   percentage qualitative | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
PLoS Medicine | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
   qualitative empirical articles | --- | --- | --- | --- | --- | 0 | 0 | 0 | 1 | 1 | 2 |
   total empirical articles |  |  |  |  |  | 42 | 189 | 288 | 222 | 179 | 920 |
   percentage qualitative |  |  |  |  |  | 0.0 | 0.0 | 0.0 | 0.5 | 0.6 | 0.2 |