Abstract
Using a selection of general science journals, general medical journals and specialized medical journals, this paper analyses four indicators of epistemic community formation: Synchronous, diachronous, immediate, and continuants. The analyses show that the specialized medical journals display higher levels of epistemic community formation as measured by the percentage of recurring authors. There are only slight differences in the results across analyses of the four indicators. Yet, the analyses of each indicator illustrate different levels of variance. The results further indicate that the level of epistemic community formation, as measured by the percentage of recurring authors, is closely tied to specialization, and could therefore also be considered as yet another indicator of specialization.
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Appendix 1
Appendix 1
Data for each journal is listed below.
Y: Year; N: Number of publications (articles; reviews; notes); A: Number of authors with at least one paper in the journal in Y; Y − 3: Number of authors with at least one paper in the journal in Y and at least one paper in the same journal the preceding 3 years; Y − 3(%): Percentage of authors with at least one paper in the journal in Y and at least one paper in the same journal the preceding 3 years; Y + 3: Number of authors with at least one paper in the journal in Y and at least one paper in the same journal the succeeding 3 years; Y + 3(%): Percentage of authors with at least one paper in the journal in Y and at least one paper in the same journal the succeeding 3 years; Cont.: Number of continuants (authors with at least one paper in the journal in Y, at least one paper in the same journal the preceding 3 years, and at least one paper in the same journal the succeeding 3 years); Cont.(%): Percentage of continuants.
American Journal of Ophthalmology
Y | N | A | Y − 3 | Y − 3 (%) | Y + 3 | Y + 3(%) | Y + 1 | Y + 1 (%) | Cont | Cont. (%) |
---|---|---|---|---|---|---|---|---|---|---|
1997 | 316 | 1158 | – | – | 353 | 30.484 | 194 | 16.753 | – | – |
1998 | 294 | 1139 | – | – | 425 | 37.313 | 223 | 19.579 | – | – |
1999 | 330 | 1309 | – | – | 610 | 46.600 | 335 | 25.592 | – | – |
2000 | 344 | 1443 | 532 | 36.868 | 612 | 42.412 | 400 | 27.720 | 368 | 25.502 |
2001 | 377 | 1709 | 662 | 38.736 | 571 | 33.411 | 318 | 18.607 | 335 | 19.602 |
2002 | 363 | 1393 | 518 | 37.186 | 537 | 38.550 | 326 | 23.403 | 337 | 24.192 |
2003 | 437 | 1634 | 573 | 35.067 | 595 | 36.414 | 364 | 22.277 | 356 | 21.787 |
2004 | 458 | 1687 | 599 | 35.507 | 634 | 37.582 | 384 | 22.762 | 374 | 22.170 |
2005 | 461 | 1799 | 617 | 34.297 | 678 | 37.688 | 406 | 22.568 | 388 | 21.568 |
2006 | 463 | 1759 | 651 | 37.010 | 602 | 34.224 | 391 | 22.229 | 367 | 20.864 |
2007 | 392 | 1704 | 670 | 39.319 | 481 | 28.228 | 282 | 16.549 | 316 | 18.545 |
2008 | 281 | 1254 | 488 | 38.915 | 471 | 37.560 | 289 | 23.046 | 270 | 21.531 |
2009 | 267 | 1202 | 500 | 41.597 | 404 | 33.611 | 240 | 19.967 | 264 | 21.963 |
2010 | 241 | 1138 | 428 | 37.610 | 421 | 36.995 | 233 | 20.475 | 256 | 22.496 |
2011 | 269 | 1198 | 413 | 34.474 | 457 | 38.147 | 275 | 22.955 | 266 | 22.204 |
2012 | 271 | 1348 | 426 | 31.602 | 474 | 35.163 | 224 | 16.617 | 255 | 18.917 |
2013 | 298 | 1365 | 434 | 31.795 | 542 | 39.707 | 298 | 21.832 | 261 | 19.121 |
2014 | 326 | 1558 | 487 | 31.258 | 540 | 34.660 | 317 | 20.347 | 283 | 18.164 |
2015 | 294 | 2245 | 588 | 26.192 | 1045 | 46.548 | 803 | 35.768 | 377 | 16.793 |
2016 | 275 | 2071 | 1048 | 50.604 | 666 | 32.158 | 323 | 15.596 | 412 | 19.894 |
2017 | 263 | 1717 | 548 | 31.916 | 561 | 32.673 | 319 | 18.579 | 317 | 18.462 |
2018 | 287 | 2229 | 598 | 26.828 | – | – | 443 | 19.874 | – | – |
2019 | 297 | 2085 | 767 | 36.787 | – | – | 452 | 21.679 | – | – |
2020 | 321 | 2096 | 828 | 39.504 | – | – | – | – | – | – |
Annals of Internal Medicine
Y | N | A | Y − 3 | Y − 3 (%) | Y + 3 | Y + 3 (%) | Y + 1 | Y + 1 (%) | Cont | Cont .(%) |
---|---|---|---|---|---|---|---|---|---|---|
1997 | 317 | 1258 | – | – | 229 | 18.203 | 113 | 8.983 | – | – |
1998 | 319 | 1340 | – | – | 234 | 17.463 | 118 | 8.806 | – | – |
1999 | 279 | 1051 | – | – | 221 | 21.028 | 107 | 10.181 | – | – |
2000 | 285 | 1132 | 207 | 18.286 | 205 | 18.110 | 79 | 6.979 | 86 | 7.597 |
2001 | 326 | 1117 | 207 | 18.532 | 217 | 19.427 | 77 | 6.893 | 96 | 8.594 |
2002 | 339 | 1092 | 191 | 17.491 | 199 | 18.223 | 100 | 9.158 | 90 | 8.242 |
2003 | 460 | 1125 | 235 | 20.889 | 245 | 21.778 | 107 | 9.511 | 116 | 10.311 |
2004 | 457 | 1280 | 237 | 18.516 | 244 | 19.063 | 124 | 9.688 | 109 | 8.516 |
2005 | 391 | 1093 | 237 | 21.683 | 220 | 20.128 | 95 | 8.692 | 106 | 9.698 |
2006 | 273 | 1162 | 230 | 19.793 | 215 | 18.503 | 86 | 7.401 | 103 | 8.864 |
2007 | 262 | 1375 | 200 | 14.545 | 253 | 18.400 | 126 | 9.164 | 100 | 7.273 |
2008 | 248 | 1973 | 261 | 13.229 | 218 | 11.049 | 112 | 5.677 | 108 | 5.474 |
2009 | 309 | 1336 | 241 | 18.039 | 232 | 17.365 | 99 | 7.410 | 99 | 7.410 |
2010 | 410 | 1254 | 187 | 14.912 | 272 | 21.691 | 121 | 9.649 | 107 | 8.533 |
2011 | 446 | 1254 | 261 | 20.813 | 334 | 26.635 | 160 | 12.759 | 152 | 12.121 |
2012 | 458 | 1455 | 296 | 20.344 | 337 | 23.162 | 165 | 11.340 | 146 | 10.034 |
2013 | 624 | 1945 | 352 | 18.098 | 420 | 21.594 | 233 | 11.979 | 179 | 9.203 |
2014 | 481 | 1491 | 396 | 26.559 | 388 | 26.023 | 221 | 14.822 | 206 | 13.816 |
2015 | 444 | 1784 | 412 | 23.094 | 413 | 23.150 | 230 | 12.892 | 212 | 11.883 |
2016 | 398 | 1804 | 387 | 21.452 | 353 | 19.568 | 213 | 11.807 | 202 | 11.197 |
2017 | 505 | 1886 | 413 | 21.898 | 360 | 19.088 | 198 | 10.498 | 199 | 10.551 |
2018 | 489 | 1827 | 349 | 19.102 | – | – | 179 | 9.797 | – | – |
2019 | 584 | 2028 | 325 | 16.026 | – | – | 224 | 11.045 | – | – |
2020 | 624 | 2243 | 431 | 19.215 | – | – | – | – | – | – |
British Journal of Ophthalmology
Y | N | A | Y − 3 | Y − 3 (%) | Y + 3 | Y + 3 (%) | Y + 1 | Y + 1 (%) | Cont | Cont. (%) |
---|---|---|---|---|---|---|---|---|---|---|
1997 | 199 | 693 | – | – | 209 | 30.159 | 108 | 15.584 | – | – |
1998 | 243 | 879 | – | – | 289 | 32.878 | 164 | 18.658 | – | – |
1999 | 236 | 939 | – | – | 321 | 34.185 | 160 | 17.039 | – | – |
2000 | 265 | 1014 | 209 | 30.159 | 312 | 30.769 | 165 | 16.272 | 165 | 16.272 |
2001 | 292 | 1090 | 289 | 32.878 | 313 | 28.716 | 181 | 16.606 | 154 | 14.128 |
2002 | 288 | 1150 | 321 | 34.185 | 391 | 34.000 | 197 | 17.130 | 207 | 18.000 |
2003 | 295 | 1175 | 312 | 30.769 | 425 | 36.170 | 220 | 18.723 | 211 | 17.957 |
2004 | 337 | 1384 | 313 | 28.716 | 454 | 32.803 | 216 | 15.607 | 240 | 17.341 |
2005 | 327 | 1464 | 391 | 34.000 | 442 | 30.191 | 251 | 17.145 | 218 | 14.891 |
2006 | 327 | 1537 | 425 | 36.170 | 448 | 29.148 | 273 | 17.762 | 247 | 16.070 |
2007 | 346 | 1541 | 454 | 32.803 | 542 | 35.172 | 290 | 18.819 | 277 | 17.975 |
2008 | 341 | 1542 | 442 | 30.191 | 472 | 30.610 | 266 | 17.250 | 259 | 16.796 |
2009 | 338 | 1668 | 448 | 29.148 | 459 | 27.518 | 218 | 13.070 | 263 | 15.767 |
2010 | 314 | 1444 | 542 | 35.172 | 387 | 26.801 | 231 | 15.997 | 213 | 14.751 |
2011 | 326 | 1684 | 472 | 30.610 | 422 | 25.059 | 207 | 12.292 | 234 | 13.895 |
2012 | 288 | 1334 | 459 | 27.518 | 379 | 28.411 | 208 | 15.592 | 209 | 15.667 |
2013 | 291 | 1510 | 387 | 26.801 | 450 | 29.801 | 234 | 15.497 | 215 | 14.238 |
2014 | 330 | 1658 | 422 | 25.059 | 442 | 26.659 | 265 | 15.983 | 196 | 11.821 |
2015 | 316 | 1899 | 379 | 28.411 | 528 | 27.804 | 277 | 14.587 | 264 | 13.902 |
2016 | 328 | 1707 | 450 | 29.801 | 529 | 30.990 | 310 | 18.161 | 247 | 14.470 |
2017 | 308 | 1689 | 442 | 26.659 | 585 | 34.636 | 287 | 16.992 | 306 | 18.117 |
2018 | 296 | 1685 | 528 | 27.804 | – | – | 319 | 18.932 | – | – |
2019 | 318 | 1939 | 529 | 30.990 | – | – | 428 | 22.073 | – | – |
2020 | 363 | 2860 | 585 | 34.636 | – | – | – | – | – | – |
British Medical Journal
Y | N | A | Y − 3 | Y − 3 (%) | Y + 3 | Y + 3 (%) | Y + 1 | Y + 1 (%) | Cont | Cont. (%) |
---|---|---|---|---|---|---|---|---|---|---|
1997 | 1141 | 2071 | – | – | 509 | 24.577 | 244 | 11.782 | – | – |
1998 | 1584 | 2307 | – | – | 514 | 22.280 | 290 | 12.570 | – | – |
1999 | 1701 | 2199 | – | – | 526 | 23.920 | 272 | 12.369 | – | – |
2000 | 1496 | 2210 | 514 | 23.258 | 535 | 24.208 | 289 | 13.077 | 290 | 13.122 |
2001 | 1804 | 2186 | 526 | 24.062 | 507 | 23.193 | 277 | 12.672 | 275 | 12.580 |
2002 | 1740 | 2277 | 534 | 23.452 | 581 | 25.516 | 321 | 14.097 | 293 | 12.868 |
2003 | 1887 | 2581 | 546 | 21.155 | 592 | 22.937 | 346 | 13.406 | 325 | 12.592 |
2004 | 1816 | 2496 | 604 | 24.199 | 526 | 21.074 | 305 | 12.220 | 290 | 11.619 |
2005 | 1586 | 2568 | 567 | 22.079 | 497 | 19.354 | 292 | 11.371 | 258 | 10.047 |
2006 | 1320 | 2056 | 520 | 25.292 | 399 | 19.407 | 165 | 8.025 | 223 | 10.846 |
2007 | 778 | 1620 | 375 | 23.148 | 375 | 23.148 | 160 | 9.877 | 211 | 13.025 |
2008 | 821 | 2366 | 335 | 14.159 | 439 | 18.555 | 223 | 9.425 | 197 | 8.326 |
2009 | 1070 | 2675 | 487 | 18.206 | 568 | 21.234 | 287 | 10.729 | 245 | 9.159 |
2010 | 1180 | 2743 | 510 | 18.593 | 599 | 21.837 | 306 | 11.156 | 263 | 9.588 |
2011 | 729 | 2585 | 558 | 21.586 | 580 | 22.437 | 298 | 11.528 | 273 | 10.561 |
2012 | 783 | 2745 | 589 | 21.457 | 551 | 20.073 | 263 | 9.581 | 276 | 10.055 |
2013 | 859 | 2719 | 519 | 19.088 | 581 | 21.368 | 285 | 10.482 | 277 | 10.188 |
2014 | 905 | 2876 | 579 | 20.132 | 546 | 18.985 | 296 | 10.292 | 256 | 8.901 |
2015 | 1120 | 2890 | 619 | 21.419 | 523 | 18.097 | 268 | 9.273 | 270 | 9.343 |
2016 | 935 | 2260 | 542 | 23.982 | 531 | 23.496 | 274 | 12.124 | 268 | 11.858 |
2017 | 819 | 2093 | 485 | 23.172 | 405 | 19.350 | 232 | 11.085 | 223 | 10.655 |
2018 | 807 | 2952 | 511 | 17.310 | – | – | 322 | 10.908 | – | – |
2019 | 927 | 3110 | 527 | 16.945 | – | – | 288 | 9.260 | – | – |
2020 | 879 | 3091 | 528 | 17.082 | – | – | – | – | – | – |
Experimental Eye Research
Y | N | A | Y − 3 | Y − 3 (%) | Y + 3 | Y + 3 (%) | Y + 1 | Y + 1 (%) | Cont | Cont. (%) |
---|---|---|---|---|---|---|---|---|---|---|
1997 | 198 | 784 | – | – | 224 | 28.571 | 111 | 14.158 | – | – |
1998 | 150 | 595 | – | – | 158 | 26.555 | 87 | 14.622 | – | – |
1999 | 145 | 579 | – | – | 170 | 29.361 | 88 | 15.199 | – | – |
2000 | 144 | 593 | 151 | 25.464 | 134 | 22.597 | 62 | 10.455 | 68 | 11.467 |
2001 | 152 | 649 | 156 | 24.037 | 193 | 29.738 | 77 | 11.864 | 82 | 12.635 |
2002 | 142 | 642 | 149 | 23.209 | 186 | 28.972 | 99 | 15.421 | 86 | 13.396 |
2003 | 158 | 678 | 214 | 31.563 | 213 | 31.416 | 105 | 15.487 | 109 | 16.077 |
2004 | 194 | 758 | 183 | 24.142 | 249 | 32.850 | 115 | 15.172 | 108 | 14.248 |
2005 | 176 | 834 | 202 | 24.221 | 243 | 29.137 | 162 | 19.424 | 92 | 11.031 |
2006 | 297 | 1341 | 304 | 22.670 | 366 | 27.293 | 184 | 13.721 | 151 | 11.260 |
2007 | 217 | 1011 | 293 | 28.981 | 283 | 27.992 | 144 | 14.243 | 144 | 14.243 |
2008 | 181 | 869 | 271 | 31.185 | 248 | 28.539 | 141 | 16.226 | 123 | 14.154 |
2009 | 255 | 1153 | 307 | 26.626 | 261 | 22.637 | 144 | 12.489 | 144 | 12.489 |
2010 | 204 | 931 | 262 | 28.142 | 231 | 24.812 | 131 | 14.071 | 115 | 12.352 |
2011 | 171 | 819 | 253 | 30.891 | 186 | 22.711 | 74 | 9.035 | 111 | 13.553 |
2012 | 173 | 859 | 157 | 18.277 | 237 | 27.590 | 103 | 11.991 | 79 | 9.197 |
2013 | 241 | 1211 | 208 | 17.176 | 288 | 23.782 | 145 | 11.974 | 97 | 8.010 |
2014 | 241 | 1235 | 288 | 23.320 | 306 | 24.777 | 151 | 12.227 | 146 | 11.822 |
2015 | 189 | 957 | 284 | 29.676 | 267 | 27.900 | 148 | 15.465 | 139 | 14.525 |
2016 | 248 | 1357 | 321 | 23.655 | 329 | 24.245 | 115 | 8.475 | 150 | 11.054 |
2017 | 183 | 921 | 225 | 24.430 | 227 | 24.647 | 111 | 12.052 | 118 | 12.812 |
2018 | 247 | 1481 | 283 | 19.109 | – | – | 202 | 13.639 | – | – |
2019 | 327 | 1964 | 365 | 18.585 | – | – | 190 | 9.674 | – | – |
2020 | 317 | 1790 | 333 | 18.603 | – | – | – | – | – | – |
Investigative Ophthalmology & Visual Science
Y | N | A | Y − 3 | Y − 3 (%) | Y + 3 | Y + 3 (%) | Y + 1 | Y + 1 (%) | Cont | Cont. (%) |
---|---|---|---|---|---|---|---|---|---|---|
1997 | 3493 | 9143 | – | – | 1380 | 15.094 | 587 | 6.420 | – | – |
1998 | 348 | 1226 | – | – | 524 | 42.741 | 272 | 22.186 | – | – |
1999 | 445 | 1536 | – | – | 644 | 41.927 | 388 | 25.260 | – | – |
2000 | 580 | 1930 | 898 | 46.528 | 809 | 41.917 | 417 | 21.606 | 563 | 29.171 |
2001 | 471 | 1772 | 661 | 37.302 | 802 | 45.260 | 400 | 22.573 | 438 | 24.718 |
2002 | 503 | 1996 | 716 | 35.872 | 872 | 43.687 | 541 | 27.104 | 485 | 24.299 |
2003 | 702 | 2669 | 974 | 36.493 | 1129 | 42.300 | 623 | 23.342 | 608 | 22.780 |
2004 | 593 | 2495 | 986 | 39.519 | 1071 | 42.926 | 616 | 24.689 | 626 | 25.090 |
2005 | 630 | 2779 | 1025 | 36.884 | 1144 | 41.166 | 641 | 23.066 | 663 | 23.858 |
2006 | 704 | 3310 | 1114 | 33.656 | 1322 | 39.940 | 740 | 22.356 | 758 | 22.900 |
2007 | 724 | 3324 | 1245 | 37.455 | 1335 | 40.162 | 736 | 22.142 | 787 | 23.676 |
2008 | 717 | 3250 | 1248 | 38.400 | 1425 | 43.846 | 784 | 24.123 | 821 | 25.262 |
2009 | 763 | 3496 | 1391 | 39.788 | 1616 | 46.224 | 900 | 25.744 | 957 | 27.374 |
2010 | 887 | 4045 | 1533 | 37.899 | 1835 | 45.365 | 1260 | 31.150 | 1076 | 26.601 |
2011 | 1208 | 5452 | 2028 | 37.197 | 2139 | 39.233 | 1287 | 23.606 | 1251 | 22.946 |
2012 | 1025 | 4509 | 1844 | 40.896 | 1858 | 41.206 | 1124 | 24.928 | 1157 | 25.660 |
2013 | 1047 | 4559 | 1887 | 41.391 | 1911 | 41.917 | 1171 | 25.685 | 1158 | 25.400 |
2014 | 993 | 4544 | 1946 | 42.826 | 1712 | 37.676 | 1008 | 22.183 | 1102 | 24.252 |
2015 | 939 | 4655 | 1781 | 38.260 | 1688 | 36.262 | 981 | 21.074 | 1036 | 22.256 |
2016 | 848 | 4158 | 1658 | 39.875 | 1544 | 37.133 | 903 | 21.717 | 964 | 23.184 |
2017 | 740 | 4337 | 1614 | 37.215 | 1406 | 32.419 | 870 | 20.060 | 846 | 19.507 |
2018 | 680 | 3997 | 1561 | 39.054 | – | – | 661 | 16.537 | – | – |
2019 | 539 | 3258 | 1209 | 37.109 | – | – | 601 | 18.447 | – | – |
2020 | 516 | 3234 | 1165 | 36.024 | – | – | – | – | – | – |
JAMA Ophthalmology
Y | N | A | Y − 3 | Y − 3 (%) | Y + 3 | Y + 3 (%) | Y + 1 | Y + 1 (%) | Cont | Cont. (%) |
---|---|---|---|---|---|---|---|---|---|---|
1997 | 308 | 1097 | – | – | 351 | 31.996 | 196 | 17.867 | – | – |
1998 | 309 | 1004 | – | – | 336 | 33.466 | 149 | 14.841 | – | – |
1999 | 273 | 933 | – | – | 323 | 34.620 | 174 | 18.650 | – | – |
2000 | 276 | 1258 | 360 | 28.617 | 395 | 31.399 | 215 | 17.091 | 223 | 17.727 |
2001 | 269 | 1467 | 395 | 26.926 | 404 | 27.539 | 211 | 14.383 | 243 | 16.564 |
2002 | 293 | 1271 | 366 | 28.796 | 402 | 31.629 | 225 | 17.703 | 236 | 18.568 |
2003 | 314 | 1297 | 412 | 31.766 | 408 | 31.457 | 198 | 15.266 | 240 | 18.504 |
2004 | 302 | 1149 | 380 | 33.072 | 315 | 27.415 | 177 | 15.405 | 215 | 18.712 |
2005 | 261 | 1082 | 376 | 34.750 | 299 | 27.634 | 160 | 14.787 | 209 | 19.316 |
2006 | 266 | 1138 | 326 | 28.647 | 315 | 27.680 | 159 | 13.972 | 169 | 14.851 |
2007 | 268 | 1080 | 291 | 26.944 | 351 | 32.500 | 202 | 18.704 | 177 | 16.389 |
2008 | 240 | 1378 | 361 | 26.197 | 382 | 27.721 | 202 | 14.659 | 213 | 15.457 |
2009 | 245 | 1027 | 346 | 33.690 | 369 | 35.930 | 188 | 18.306 | 204 | 19.864 |
2010 | 253 | 1206 | 370 | 30.680 | 409 | 33.914 | 223 | 18.491 | 223 | 18.491 |
2011 | 266 | 1168 | 385 | 32.962 | 383 | 32.791 | 222 | 19.007 | 205 | 17.551 |
2012 | 327 | 1315 | 434 | 33.004 | 453 | 34.449 | 218 | 16.578 | 272 | 20.684 |
2013 | 260 | 1136 | 379 | 33.363 | 345 | 30.370 | 208 | 18.310 | 214 | 18.838 |
2014 | 270 | 1285 | 405 | 31.518 | 497 | 38.677 | 325 | 25.292 | 254 | 19.767 |
2015 | 297 | 1646 | 509 | 30.923 | 475 | 28.858 | 261 | 15.857 | 263 | 15.978 |
2016 | 298 | 1223 | 412 | 33.688 | 456 | 37.285 | 287 | 23.467 | 256 | 20.932 |
2017 | 304 | 1541 | 486 | 31.538 | 601 | 39.001 | 452 | 29.332 | 275 | 17.846 |
2018 | 289 | 1868 | 657 | 35.171 | – | – | 238 | 12.741 | – | – |
2019 | 318 | 1399 | 385 | 27.520 | – | – | 251 | 17.941 | – | – |
2020 | 266 | 1186 | 429 | 36.172 | – | – | – | – | – | – |
Journal of Clinical Oncology
Y | N | A | Y − 3 | Y − 3 (%) | Y + 3 | Y + 3 (%) | Y + 1 | Y + 1 (%) | Cont | Cont. (%) |
---|---|---|---|---|---|---|---|---|---|---|
1997 | 426 | 3180 | – | – | 1253 | 39.403 | 717 | 22.547 | – | – |
1998 | 493 | 3496 | – | – | 1463 | 41.848 | 838 | 23.970 | – | – |
1999 | 467 | 3608 | – | – | 1533 | 42.489 | 821 | 22.755 | – | – |
2000 | 486 | 3571 | 1412 | 39.541 | 1527 | 42.761 | 870 | 24.363 | 944 | 26.435 |
2001 | 514 | 4179 | 1564 | 37.425 | 1674 | 40.057 | 842 | 20.148 | 995 | 23.810 |
2002 | 548 | 4064 | 1504 | 37.008 | 1796 | 44.193 | 982 | 24.163 | 1044 | 25.689 |
2003 | 634 | 4775 | 1804 | 37.780 | 2147 | 44.963 | 993 | 20.796 | 1277 | 26.743 |
2004 | 614 | 4591 | 1673 | 36.441 | 1963 | 42.758 | 1325 | 28.861 | 1155 | 25.158 |
2005 | 1042 | 7356 | 2574 | 34.992 | 2773 | 37.697 | 1467 | 19.943 | 1664 | 22.621 |
2006 | 740 | 5597 | 2177 | 38.896 | 2363 | 42.219 | 1292 | 23.084 | 1492 | 26.657 |
2007 | 772 | 5538 | 2318 | 41.856 | 2487 | 44.908 | 1337 | 24.142 | 1598 | 28.855 |
2008 | 817 | 5887 | 2454 | 41.685 | 2555 | 43.401 | 1557 | 26.448 | 1645 | 27.943 |
2009 | 825 | 7042 | 2796 | 39.705 | 2822 | 40.074 | 1713 | 24.325 | 1751 | 24.865 |
2010 | 798 | 6740 | 2709 | 40.193 | 2537 | 37.641 | 1392 | 20.653 | 1709 | 25.356 |
2011 | 808 | 6385 | 2454 | 38.434 | 2171 | 34.002 | 1279 | 20.031 | 1461 | 22.882 |
2012 | 660 | 5665 | 2381 | 42.030 | 2035 | 35.922 | 1119 | 19.753 | 1329 | 23.460 |
2013 | 630 | 5772 | 2139 | 37.058 | 1990 | 34.477 | 1006 | 17.429 | 1286 | 22.280 |
2014 | 515 | 4638 | 1902 | 41.009 | 1755 | 37.840 | 953 | 20.548 | 1181 | 25.464 |
2015 | 520 | 4980 | 1937 | 38.896 | 1826 | 36.667 | 1089 | 21.867 | 1208 | 24.257 |
2016 | 508 | 5540 | 1965 | 35.469 | 1757 | 31.715 | 967 | 17.455 | 1088 | 19.639 |
2017 | 401 | 4512 | 1749 | 38.763 | 1502 | 33.289 | 749 | 16.600 | 991 | 21.964 |
2018 | 334 | 3886 | 1462 | 37.622 | – | – | 544 | 13.999 | – | – |
2019 | 306 | 3563 | 1234 | 34.634 | – | – | 647 | 18.159 | – | – |
2020 | 378 | 4873 | 1505 | 30.884 | – | – | – | – | – | – |
Journal of the American Medical Association
Y | N | A | Y − 3 | Y − 3 (%) | Y + 3 | Y + 3 (%) | Y + 1 | Y + 1 (%) | Cont | Cont. (%) |
---|---|---|---|---|---|---|---|---|---|---|
1997 | 1082 | 2474 | – | – | 574 | 23.201 | 341 | 13.783 | – | – |
1998 | 945 | 2509 | – | – | 552 | 22.001 | 225 | 8.968 | – | – |
1999 | 670 | 2253 | – | – | 500 | 22.193 | 240 | 10.652 | – | – |
2000 | 697 | 2424 | 540 | 22.277 | 525 | 21.658 | 294 | 12.129 | 259 | 10.685 |
2001 | 650 | 2678 | 576 | 21.509 | 465 | 17.364 | 264 | 9.858 | 217 | 8.103 |
2002 | 633 | 2629 | 535 | 20.350 | 533 | 20.274 | 226 | 8.596 | 255 | 9.700 |
2003 | 705 | 1869 | 390 | 20.867 | 385 | 20.599 | 199 | 10.647 | 197 | 10.540 |
2004 | 651 | 2488 | 482 | 19.373 | 561 | 22.548 | 292 | 11.736 | 270 | 10.852 |
2005 | 676 | 3227 | 518 | 16.052 | 536 | 16.610 | 273 | 8.460 | 253 | 7.840 |
2006 | 481 | 2215 | 516 | 23.296 | 448 | 20.226 | 219 | 9.887 | 250 | 11.287 |
2007 | 472 | 2559 | 493 | 19.265 | 447 | 17.468 | 246 | 9.613 | 232 | 9.066 |
2008 | 489 | 2146 | 482 | 22.460 | 492 | 22.926 | 250 | 11.650 | 262 | 12.209 |
2009 | 530 | 2523 | 461 | 18.272 | 527 | 20.888 | 250 | 9.909 | 236 | 9.354 |
2010 | 533 | 2423 | 494 | 20.388 | 456 | 18.820 | 216 | 8.915 | 222 | 9.162 |
2011 | 541 | 2330 | 453 | 19.442 | 489 | 20.987 | 237 | 10.172 | 195 | 8.369 |
2012 | 390 | 2684 | 534 | 19.896 | 565 | 21.051 | 182 | 6.781 | 234 | 8.718 |
2013 | 437 | 2669 | 385 | 14.425 | 439 | 16.448 | 214 | 8.018 | 169 | 6.332 |
2014 | 511 | 5018 | 576 | 11.479 | 700 | 13.950 | 360 | 7.174 | 243 | 4.843 |
2015 | 585 | 4274 | 629 | 14.717 | 523 | 12.237 | 220 | 5.147 | 219 | 5.124 |
2016 | 550 | 3730 | 509 | 13.646 | 554 | 14.853 | 303 | 8.123 | 220 | 5.898 |
2017 | 510 | 4036 | 622 | 15.411 | 613 | 15.188 | 321 | 7.953 | 295 | 7.309 |
2018 | 614 | 3735 | 591 | 15.823 | – | – | 249 | 6.667 | – | – |
2019 | 590 | 3302 | 513 | 15.536 | – | – | 273 | 8.268 | – | – |
2020 | 790 | 3356 | 597 | 17.789 | – | – | – | – | – | – |
Journal of the National Cancer Institute
Y | N | A | Y − 3 | Y − 3 (%) | Y + 3 | Y + 3 (%) | Y + 1 | Y + 1 (%) | Cont | Cont. (%) |
---|---|---|---|---|---|---|---|---|---|---|
1997 | 382 | 1197 | – | – | 339 | 28.321 | 189 | 15.789 | – | – |
1998 | 344 | 1189 | – | – | 297 | 24.979 | 185 | 15.559 | – | – |
1999 | 373 | 1340 | – | – | 307 | 22.910 | 185 | 13.806 | – | – |
2000 | 357 | 1262 | 321 | 25.436 | 348 | 27.575 | 177 | 14.025 | 184 | 14.580 |
2001 | 375 | 1238 | 291 | 23.506 | 279 | 22.536 | 151 | 12.197 | 162 | 13.086 |
2002 | 308 | 1288 | 313 | 24.301 | 379 | 29.425 | 186 | 14.441 | 181 | 14.053 |
2003 | 396 | 1558 | 335 | 21.502 | 428 | 27.471 | 198 | 12.709 | 190 | 12.195 |
2004 | 422 | 1433 | 351 | 24.494 | 357 | 24.913 | 203 | 14.166 | 166 | 11.584 |
2005 | 404 | 1913 | 425 | 22.216 | 490 | 25.614 | 285 | 14.898 | 222 | 11.605 |
2006 | 308 | 1626 | 471 | 28.967 | 417 | 25.646 | 217 | 13.346 | 247 | 15.191 |
2007 | 281 | 1303 | 401 | 30.775 | 306 | 23.484 | 179 | 13.738 | 194 | 14.889 |
2008 | 260 | 1584 | 383 | 24.179 | 370 | 23.359 | 155 | 9.785 | 203 | 12.816 |
2009 | 246 | 1226 | 303 | 24.715 | 351 | 28.630 | 210 | 17.129 | 185 | 15.090 |
2010 | 286 | 1543 | 401 | 25.988 | 429 | 27.803 | 243 | 15.749 | 240 | 15.554 |
2011 | 287 | 1565 | 431 | 27.540 | 439 | 28.051 | 204 | 13.035 | 236 | 15.080 |
2012 | 266 | 1364 | 333 | 24.413 | 449 | 32.918 | 213 | 15.616 | 238 | 17.449 |
2013 | 261 | 1737 | 423 | 24.352 | 518 | 29.822 | 260 | 14.968 | 273 | 15.717 |
2014 | 283 | 2365 | 503 | 21.268 | 588 | 24.863 | 410 | 17.336 | 302 | 12.770 |
2015 | 272 | 2646 | 708 | 26.757 | 651 | 24.603 | 390 | 14.739 | 307 | 11.602 |
2016 | 209 | 2095 | 569 | 27.160 | 463 | 22.100 | 236 | 11.265 | 265 | 12.649 |
2017 | 238 | 1908 | 462 | 24.214 | 395 | 20.702 | 179 | 9.382 | 209 | 10.954 |
2018 | 175 | 1802 | 379 | 21.032 | – | – | 248 | 13.762 | – | – |
2019 | 173 | 2014 | 529 | 26.266 | – | – | 278 | 13.803 | – | – |
2020 | 137 | 1580 | 441 | 27.911 | – | – | – | – | – | – |
Lancet
Y | N | A | Y − 3 | Y − 3 (%) | Y + 3 | Y + 3 (%) | Y + 1 | Y + 1 (%) | Cont | Cont. (%) |
---|---|---|---|---|---|---|---|---|---|---|
1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 | 1463 1756 1839 1678 1674 1391 1396 1285 1086 998 934 980 960 961 946 1013 958 976 1053 962 804 805 817 689 | 4535 5522 5717 4635 5391 4136 4998 4943 4215 3917 3255 5554 4573 6054 5253 6515 4453 5407 6842 7247 10,211 14,223 16,697 15,055 | – – – 932 939 801 833 738 723 626 648 703 890 1002 1495 1149 959 1039 1971 1849 2826 3028 2905 3870 | – – – 20.108 17.418 19.367 16.667 14.930 17.153 15.982 19.908 12.658 19.462 16.551 28.460 17.636 21.536 19.216 28.807 25.514 27.676 21.289 17.398 25.706 | 956 1004 970 859 856 729 644 717 702 628 829 926 929 1680 1050 1382 1021 1615 2373 2992 3574 – – – | 21.080 18.182 16.967 18.533 15.878 17.626 12.885 14.505 16.655 16.033 25.469 16.673 20.315 27.750 19.989 21.213 22.928 29.869 34.683 41.286 35.001 – – – | 471 543 482 472 400 356 342 397 310 287 341 437 507 1094 573 487 481 1135 1305 2220 1926 2006 1442 – | 10.386 9.833 8.431 10.183 7.420 8.607 6.843 8.032 7.355 7.327 10.476 7.868 11.087 18.071 10.908 7.475 10.802 20.991 19.073 30.633 18.862 14.104 8.636 – | – – – 438 389 348 307 308 292 298 351 395 437 527 527 644 544 691 1189 1242 1968 – – – | – – – 9.450 7.216 8.414 6.142 6.231 6.928 7.608 10.783 7.112 9.556 8.705 10.032 9.885 12.216 12.780 17.378 17.138 19.273 – – – |
Nature
Y | N | A | Y − 3 | Y − 3 (%) | Y + 3 | Y + 3 (%) | Y + 1 | Y + 1 (%) | Cont | Cont. (%) |
---|---|---|---|---|---|---|---|---|---|---|
1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 | 2241 2062 1723 1992 1851 1784 1772 1808 1936 1642 1507 1563 1559 1674 1853 1978 2051 1707 1734 2318 2296 2370 2175 2519 | 5457 4931 5502 6752 6282 6630 6144 8894 8291 7685 8014 8245 8537 10,156 11,003 13,392 10,759 12,609 17,211 12,934 16,461 13,404 17,263 24,341 | – – – 1127 1207 1306 1251 1638 1916 1882 1813 1733 1663 2327 2644 3226 2709 3138 3436 3257 3846 2686 3263 5716 | – – – 16.691 19.214 19.698 20.361 18.417 23.109 24.489 22.623 21.019 19.480 22.913 24.030 24.089 25.179 24.887 19.964 25.182 23.364 20.039 18.902 23.483 | 1027 1002 1209 1188 1535 1458 1543 2008 2026 1683 1802 2022 2041 2911 3123 3930 2724 3203 3741 3365 3930 – – – | 18.820 20.320 21.974 17.595 24.435 21.991 25.114 22.577 24.436 21.900 22.486 24.524 23.908 28.663 28.383 29.346 25.318 25.402 21.736 26.017 23.875 – – – | 499 457 592 576 711 565 767 1013 992 763 810 853 1061 1620 1919 1657 1333 1566 1769 1747 1313 1316 2992 – | 9.144 9.268 10.760 8.531 11.318 8.522 12.484 11.390 11.965 9.928 10.107 10.346 12.428 15.951 17.441 12.373 12.390 12.420 10.278 13.507 7.976 9.818 17.332 – | – – – 464 584 612 686 833 929 784 732 802 791 1144 1423 1796 1359 1573 1591 1446 1707 – – – | – – – 6.872 9.296 9.231 11.165 9.366 11.205 10.202 9.134 9.727 9.266 11.264 12.933 13.411 12.631 12.475 9.244 11.180 10.370 – – – |
New England Journal of Medicine
Y | N | A | Y − 3 | Y − 3 (%) | Y + 3 | Y + 3 (%) | Y + 1 | Y + 1 (%) | Cont | Cont. (%) |
---|---|---|---|---|---|---|---|---|---|---|
1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 | 702 720 697 612 570 520 723 797 618 556 669 650 752 623 590 559 785 784 676 643 631 703 686 769 | 2644 2830 2958 2509 2566 2586 3473 3177 3127 4210 3645 6012 4777 4605 5031 11,500 9928 5928 8957 7034 12,280 7877 7379 6239 | – – – 386 380 372 428 499 498 564 599 760 668 839 863 1317 1804 1148 1955 1556 2084 2081 1813 1038 | – – – 15.385 14.809 14.385 12.324 15.707 15.926 13.397 16.433 12.641 13.984 18.219 17.154 11.452 18.171 19.366 21.827 22.121 16.971 26.419 24.570 16.637 | 419 387 374 372 385 447 576 575 551 705 688 777 923 1018 1287 2322 1582 1242 2238 1470 2142 – – – | 15.847 13.675 12.644 14.827 15.004 17.285 16.585 18.099 17.621 16.746 18.875 12.924 19.322 22.106 25.581 20.191 15.935 20.951 24.986 20.898 17.443 – – – | 160 146 162 148 172 185 254 226 209 283 325 308 369 420 684 1211 533 584 756 747 1242 853 476 – | 6.051 5.159 5.477 5.899 6.703 7.154 7.314 7.114 6.684 6.722 8.916 5.123 7.725 9.121 13.596 10.530 5.369 9.852 8.440 10.620 10.114 10.829 6.451 – | – – – 148 152 160 191 223 217 269 282 303 338 413 453 646 732 534 1025 699 857 – – – | – – – 5.899 5.924 6.187 5.500 7.019 6.940 6.390 7.737 5.040 7.076 8.969 9.004 5.617 7.373 9.008 11.444 9.937 6.979 – – – |
Ophthalmology
Y | N | A | Y − 3 | Y − 3 (%) | Y + 3 | Y + 3 (%) | Y + 1 | Y + 1 (%) | Cont | Cont. (%) |
---|---|---|---|---|---|---|---|---|---|---|
1997 | 312 | 1204 | – | – | 505 | 41.944 | 278 | 23.090 | – | – |
1998 | 342 | 1523 | – | – | 530 | 34.800 | 317 | 20.814 | – | – |
1999 | 362 | 1426 | – | – | 521 | 36.536 | 295 | 20.687 | – | – |
2000 | 340 | 1313 | 498 | 37.928 | 506 | 38.538 | 298 | 22.696 | 312 | 23.762 |
2001 | 365 | 1456 | 540 | 37.088 | 534 | 36.676 | 324 | 22.253 | 324 | 22.253 |
2002 | 368 | 1402 | 525 | 37.447 | 554 | 39.515 | 338 | 24.108 | 313 | 22.325 |
2003 | 374 | 1664 | 557 | 33.474 | 487 | 29.267 | 299 | 17.969 | 284 | 17.067 |
2004 | 336 | 1521 | 518 | 34.057 | 512 | 33.662 | 297 | 19.527 | 307 | 20.184 |
2005 | 326 | 1339 | 474 | 35.400 | 560 | 41.822 | 354 | 26.438 | 316 | 23.600 |
2006 | 328 | 1428 | 555 | 38.866 | 563 | 39.426 | 300 | 21.008 | 351 | 24.580 |
2007 | 332 | 1445 | 537 | 37.163 | 553 | 38.270 | 322 | 22.284 | 335 | 23.183 |
2008 | 331 | 1483 | 542 | 36.548 | 556 | 37.492 | 334 | 22.522 | 323 | 21.780 |
2009 | 335 | 1560 | 578 | 37.051 | 634 | 40.641 | 347 | 22.244 | 370 | 23.718 |
2010 | 324 | 1618 | 594 | 36.712 | 643 | 39.740 | 387 | 23.918 | 371 | 22.930 |
2011 | 338 | 1686 | 632 | 37.485 | 672 | 39.858 | 376 | 22.301 | 392 | 23.250 |
2012 | 348 | 1838 | 622 | 33.841 | 722 | 39.282 | 421 | 22.905 | 423 | 23.014 |
2013 | 357 | 1820 | 724 | 39.780 | 765 | 42.033 | 446 | 24.505 | 455 | 25.000 |
2014 | 328 | 1837 | 748 | 40.719 | 703 | 38.269 | 452 | 24.605 | 426 | 23.190 |
2015 | 353 | 3043 | 793 | 26.060 | 1135 | 37.299 | 493 | 16.201 | 490 | 16.103 |
2016 | 340 | 2021 | 767 | 37.952 | 704 | 34.834 | 344 | 17.021 | 433 | 21.425 |
2017 | 262 | 1471 | 561 | 38.137 | 588 | 39.973 | 395 | 26.852 | 333 | 22.638 |
2018 | 265 | 3585 | 1144 | 31.911 | – | – | 1403 | 39.135 | – | – |
2019 | 224 | 2825 | 1649 | 58.372 | – | – | 386 | 13.664 | – | – |
2020 | 189 | 1387 | 547 | 39.438 | – | – | – | – | – | – |
Science
Y | N | A | Y − 3 | Y − 3 (%) | Y + 3 | Y + 3 (%) | Y + 1 | Y + 1 (%) | Cont | Cont. (%) |
---|---|---|---|---|---|---|---|---|---|---|
1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 | 2338 1947 1416 1542 1617 1569 1773 1815 1768 1705 1335 1329 1376 1342 1118 1138 1010 1153 1379 1416 1293 2575 2545 2701 | 5006 4862 4788 4910 5505 5595 6250 6655 7016 7217 7101 6744 8010 8844 7800 7345 8945 9334 9937 9320 9310 12,018 11,016 12,719 | – – – 944 1062 1034 1048 1073 1197 1457 1302 1496 1756 1671 1629 1541 1773 1552 1765 1872 1540 2098 1807 1956 | – – – 19.226 19.292 18.481 16.768 16.123 17.061 20.188 18.335 22.183 21.923 18.894 20.885 20.980 19.821 16.627 17.762 20.086 16.541 17.457 16.403 15.379 | 1041 925 905 1060 1180 1064 1175 1243 1450 1582 1487 1647 1553 1777 1581 1618 1767 1764 2014 1697 1830 – – – | 20.795 19.025 18.901 21.589 21.435 19.017 18.800 18.678 20.667 21.920 20.941 24.422 19.388 20.093 20.269 22.029 19.754 18.899 20.268 18.208 19.656 – – – | 501 449 463 599 589 478 497 567 777 628 677 928 843 924 844 873 891 918 1013 725 988 911 978 – | 10.008 9.235 9.670 12.200 10.699 8.543 7.952 8.520 11.075 8.702 9.534 13.760 10.524 10.448 10.821 11.886 9.961 9.835 10.194 7.779 10.612 7.580 8.878 – | – – – 440 512 441 473 472 521 660 586 674 765 720 712 774 769 703 728 744 647 – – – | – – – 8.961 9.301 7.882 7.568 7.092 7.426 9.145 8.252 9.994 9.551 8.141 9.128 10.538 8.597 7.532 7.326 7.983 6.950 – – – |
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Nicolaisen, J., Frandsen, T.F. Epistemic community formation: a bibliometric study of recurring authors in medical journals. Scientometrics 127, 4167–4189 (2022). https://doi.org/10.1007/s11192-022-04409-3
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DOI: https://doi.org/10.1007/s11192-022-04409-3