Bibliometric Analysis
Journal Bibliometric Report (2021)
The Journal Bibliometric Report is based on all publications in Medline/Pubmed that were cited by Medline/Pubmed publications in 2021.
Search for a journal name or select one of the fields listed in the table below.
Field/Discipline Summary
Fields are based on the broad subject headings assigned to journals in NLM. For each field, the table below lists the number of journals cited in 2021 (Journals); the total number of times citable publications were cited in 2021 (Total Cites); the average number of times citable publications from 2019 and 2020 were cited by publications in 2021 (Impact Factor); the average number of times citable publications from 2016 through 2020 were cited by publications in 2021 (5-Year Impact); the average number of times citable publications from 2021 were cited by publications in 2021 (Immediacy Index); the number of citable publications in 2021 (Articles); and the median age in years of citable publications that were cited by publications in 2021 (Cited Half-Life). Citable publications are those whose Medline/Pubmed type is "Journal Article", which in general includes things like original research, meta-analysis, and reviews, but does not include editorials or letters. The data in the table below includes self-citations.
| Field | Journals | Total Cites | Impact Factor | 5-Year Impact | Immediacy Index | Articles | CitedHalfLife | ShowJournals |
|---|---|---|---|---|---|---|---|---|
| Acquired Immunodeficiency Syndrome | 49 | 62846 | 1.946 | 2.002 | 0.599 | 2609 | 7 | Details |
| Aerospace Medicine | 19 | 3461 | 0.389 | 0.411 | 0.071 | 269 | 17 | Details |
| Allergy and Immunology | 281 | 1002157 | 4.227 | 3.839 | 0.972 | 23151 | 8 | Details |
| Anatomy | 69 | 40857 | 0.947 | 1.053 | 0.322 | 1867 | 14 | Details |
| Anesthesiology | 77 | 89292 | 1.355 | 1.279 | 0.332 | 4757 | 8 | Details |
| Anthropology | 19 | 9423 | 0.706 | 0.770 | 0.202 | 521 | 11 | Details |
| Anti-Infective Agents | 27 | 123121 | 3.443 | 3.034 | 0.805 | 3239 | 7 | Details |
| Antineoplastic Agents | 19 | 46571 | 1.738 | 1.958 | 0.460 | 1696 | 7 | Details |
| Audiology | 38 | 39553 | 0.859 | 0.919 | 0.191 | 2471 | 12 | Details |
| Bacteriology | 20 | 56246 | 2.147 | 1.942 | 0.757 | 966 | 16 | Details |
| Behavioral Sciences | 110 | 268611 | 1.771 | 1.865 | 0.560 | 10792 | 8 | Details |
| Biochemistry | 355 | 1712730 | 2.531 | 2.418 | 0.648 | 55142 | 8 | Details |
| Biology | 308 | 1084848 | 2.715 | 2.618 | 0.763 | 48334 | 6 | Details |
| Biomedical Engineering | 139 | 376105 | 1.506 | 1.461 | 0.419 | 31011 | 5 | Details |
| Biophysics | 96 | 401086 | 1.459 | 1.266 | 0.376 | 25158 | 7 | Details |
| Biotechnology | 133 | 478792 | 1.766 | 1.780 | 0.483 | 30880 | 6 | Details |
| Botany | 52 | 347583 | 2.555 | 2.669 | 0.679 | 9813 | 8 | Details |
| Brain | 64 | 348206 | 2.544 | 2.500 | 0.606 | 8876 | 10 | Details |
| Cardiology | 264 | 704150 | 2.325 | 2.197 | 0.589 | 26002 | 8 | Details |
| Cell Biology | 222 | 1491151 | 4.851 | 4.812 | 1.160 | 26321 | 8 | Details |
| Chemistry | 153 | 1064416 | 1.694 | 1.588 | 0.479 | 71028 | 6 | Details |
| Chemistry Techniques, Analytical | 53 | 147209 | 1.110 | 1.011 | 0.291 | 10498 | 7 | Details |
| Chemistry, Clinical | 11 | 34504 | 3.426 | 2.506 | 0.700 | 819 | 9 | Details |
| Chiropractic | 2 | 2040 | 0.786 | 1.150 | 0.226 | 53 | 12 | Details |
| Clinical Laboratory Techniques | 45 | 142816 | 2.803 | 2.963 | 0.743 | 3015 | 9 | Details |
| Communicable Diseases | 89 | 415791 | 4.435 | 3.195 | 1.689 | 14165 | 6 | Details |
| Complementary Therapies | 47 | 59171 | 1.202 | 1.093 | 0.235 | 4770 | 6 | Details |
| Computational Biology | 39 | 236059 | 2.843 | 3.010 | 0.994 | 6251 | 8 | Details |
| Critical Care | 47 | 142418 | 3.093 | 2.673 | 0.948 | 3698 | 8 | Details |
| Dentistry | 436 | 274791 | 1.173 | 1.207 | 0.249 | 15093 | 9 | Details |
| Dermatology | 96 | 147918 | 1.180 | 1.204 | 0.299 | 9284 | 8 | Details |
| Diagnostic Imaging | 121 | 321647 | 1.976 | 1.939 | 0.473 | 14919 | 7 | Details |
| Disaster Medicine | 9 | 5102 | 1.176 | 0.931 | 0.224 | 711 | 6 | Details |
| Drug Therapy | 113 | 269112 | 3.052 | 2.801 | 0.784 | 9427 | 6 | Details |
| Education | 75 | 76853 | 1.087 | 1.123 | 0.296 | 6832 | 7 | Details |
| Embryology | 43 | 155237 | 2.632 | 2.887 | 0.629 | 2259 | 12 | Details |
| Emergency Medicine | 49 | 59740 | 1.226 | 1.072 | 0.332 | 5192 | 6 | Details |
| Endocrinology | 162 | 523482 | 2.920 | 2.901 | 0.737 | 13274 | 8 | Details |
| Environmental Health | 171 | 528475 | 1.343 | 1.232 | 0.355 | 63191 | 5 | Details |
| Epidemiology | 84 | 196498 | 2.073 | 1.950 | 0.672 | 6626 | 10 | Details |
| Ethics | 74 | 18036 | 0.718 | 0.672 | 0.235 | 2709 | 6 | Details |
| Family Planning Services | 15 | 4083 | 1.207 | 1.131 | 0.297 | 172 | 9 | Details |
| Forensic Sciences | 25 | 13048 | 0.660 | 0.673 | 0.176 | 1224 | 8 | Details |
| Gastroenterology | 157 | 536560 | 2.794 | 2.795 | 0.601 | 16305 | 7 | Details |
| General Surgery | 381 | 596405 | 1.137 | 1.177 | 0.229 | 37907 | 8 | Details |
| Genetics | 132 | 408877 | 3.065 | 3.093 | 0.745 | 10184 | 8 | Details |
| Genetics, Medical | 80 | 311169 | 2.927 | 3.085 | 0.773 | 6118 | 10 | Details |
| Geriatrics | 103 | 245971 | 2.338 | 2.320 | 0.659 | 10929 | 7 | Details |
| Gynecology | 130 | 176319 | 1.450 | 1.386 | 0.317 | 9059 | 8 | Details |
| Health Services | 225 | 166249 | 1.377 | 1.291 | 0.397 | 11554 | 8 | Details |
| Health Services Research | 126 | 166605 | 1.731 | 1.854 | 0.545 | 7317 | 7 | Details |
| Hematology | 116 | 342160 | 2.873 | 2.592 | 0.831 | 9941 | 8 | Details |
| Histocytochemistry | 18 | 16158 | 1.249 | 1.417 | 0.384 | 628 | 11 | Details |
| Histology | 20 | 34820 | 1.756 | 2.119 | 0.404 | 1052 | 8 | Details |
| History of Medicine | 106 | 5305 | 0.216 | 0.198 | 0.090 | 1554 | 8 | Details |
| Hospitals | 65 | 32268 | 1.556 | 1.080 | 0.458 | 2249 | 7 | Details |
| Internal Medicine | 36 | 158980 | 3.133 | 2.568 | 0.974 | 5441 | 7 | Details |
| Jurisprudence | 98 | 22176 | 0.662 | 0.622 | 0.201 | 2324 | 8 | Details |
| Laboratory Animal Science | 11 | 9987 | 1.122 | 1.210 | 0.296 | 510 | 9 | Details |
| Library Science | 4 | 1088 | 0.935 | 1.480 | 0.312 | 77 | 6 | Details |
| Medical Informatics | 82 | 149470 | 2.228 | 1.933 | 0.552 | 10921 | 5 | Details |
| Medicine (General) | 754 | 2358527 | 2.615 | 2.255 | 0.718 | 90224 | 7 | Details |
| Metabolism | 114 | 435652 | 3.195 | 3.238 | 0.749 | 11007 | 7 | Details |
| Microbiology | 225 | 759108 | 3.038 | 2.896 | 0.838 | 22381 | 8 | Details |
| Military Medicine | 25 | 12427 | 1.195 | 0.863 | 0.230 | 1193 | 7 | Details |
| Molecular Biology | 291 | 1695073 | 3.261 | 3.166 | 0.849 | 53986 | 7 | Details |
| Nanotechnology | 29 | 198640 | 1.899 | 1.772 | 0.491 | 13975 | 4 | Details |
| Neoplasms | 342 | 1728212 | 3.508 | 3.490 | 0.784 | 39852 | 7 | Details |
| Nephrology | 76 | 180965 | 2.504 | 2.356 | 0.576 | 5429 | 8 | Details |
| Neurology | 468 | 1689976 | 2.367 | 2.532 | 0.551 | 44550 | 9 | Details |
| Neurosurgery | 51 | 115093 | 1.117 | 1.206 | 0.206 | 6216 | 9 | Details |
| Nuclear Medicine | 60 | 74386 | 1.367 | 1.327 | 0.469 | 4417 | 7 | Details |
| Nursing | 480 | 168626 | 0.745 | 0.726 | 0.221 | 19112 | 7 | Details |
| Nutritional Sciences | 163 | 547687 | 2.140 | 2.216 | 0.520 | 25503 | 7 | Details |
| Obstetrics | 130 | 158755 | 1.436 | 1.366 | 0.343 | 8565 | 8 | Details |
| Occupational Medicine | 77 | 39620 | 0.920 | 0.892 | 0.331 | 2659 | 10 | Details |
| Ophthalmology | 176 | 326918 | 1.009 | 1.098 | 0.269 | 20186 | 9 | Details |
| Orthodontics | 24 | 19641 | 0.916 | 0.921 | 0.170 | 955 | 12 | Details |
| Orthopedics | 129 | 349700 | 1.378 | 1.561 | 0.235 | 15846 | 9 | Details |
| Osteopathic Medicine | 2 | 931 | 0.444 | 0.461 | 0.264 | 121 | 8 | Details |
| Otolaryngology | 87 | 93187 | 1.078 | 0.961 | 0.246 | 6979 | 8 | Details |
| Palliative Care | 21 | 45524 | 1.351 | 1.501 | 0.276 | 4001 | 6 | Details |
| Parasitology | 62 | 113258 | 2.112 | 1.930 | 0.566 | 4282 | 8 | Details |
| Pathology | 178 | 262250 | 1.998 | 1.917 | 0.475 | 8320 | 9 | Details |
| Pediatrics | 296 | 451185 | 1.365 | 1.340 | 0.363 | 24820 | 9 | Details |
| Perinatology | 47 | 50016 | 1.146 | 1.225 | 0.252 | 3464 | 7 | Details |
| Pharmacology | 308 | 735830 | 2.231 | 2.166 | 0.564 | 26256 | 7 | Details |
| Pharmacy | 71 | 43634 | 1.046 | 1.014 | 0.231 | 3936 | 6 | Details |
| Photography | 6 | 86 | 0.419 | 0.278 | 0.065 | 31 | 5 | Details |
| Physical and Rehabilitation Medicine | 100 | 119561 | 1.176 | 1.305 | 0.294 | 6431 | 8 | Details |
| Physics | 34 | 105227 | 0.741 | 0.663 | 0.246 | 11422 | 7 | Details |
| Physiology | 231 | 661040 | 2.180 | 2.221 | 0.512 | 18042 | 10 | Details |
| Podiatry | 6 | 2467 | 0.454 | 0.590 | 0.135 | 304 | 7 | Details |
| Primary Health Care | 49 | 43551 | 0.979 | 1.070 | 0.287 | 3670 | 7 | Details |
| Psychiatry | 312 | 585716 | 2.400 | 2.258 | 0.556 | 19601 | 9 | Details |
| Psychology | 281 | 514634 | 1.638 | 1.673 | 0.474 | 19162 | 10 | Details |
| Psychopharmacology | 30 | 77941 | 2.060 | 2.258 | 0.563 | 2095 | 9 | Details |
| Psychophysiology | 67 | 255217 | 2.162 | 2.181 | 0.502 | 8056 | 9 | Details |
| Public Health | 337 | 509341 | 2.369 | 2.099 | 0.692 | 37916 | 5 | Details |
| Pulmonary Medicine | 157 | 361170 | 2.436 | 2.186 | 0.726 | 12575 | 8 | Details |
| Radiology | 131 | 260535 | 2.169 | 1.836 | 0.379 | 11435 | 8 | Details |
| Radiotherapy | 28 | 75165 | 1.948 | 1.889 | 0.387 | 2992 | 8 | Details |
| Reproductive Medicine | 114 | 179228 | 1.583 | 1.697 | 0.356 | 7150 | 9 | Details |
| Rheumatology | 69 | 191836 | 2.559 | 2.499 | 0.796 | 5558 | 9 | Details |
| Science | 88 | 2402391 | 3.681 | 3.359 | 1.044 | 59793 | 7 | Details |
| Sexually Transmitted Diseases | 39 | 23938 | 1.226 | 1.178 | 0.275 | 1323 | 7 | Details |
| Social Sciences | 97 | 103760 | 1.408 | 1.456 | 0.546 | 6013 | 8 | Details |
| Speech-Language Pathology | 31 | 27518 | 0.686 | 0.702 | 0.151 | 2090 | 13 | Details |
| Sports Medicine | 55 | 176793 | 1.939 | 2.249 | 0.439 | 5683 | 8 | Details |
| Statistics as Topic | 57 | 73749 | 0.710 | 0.736 | 0.240 | 4268 | 13 | Details |
| Substance-Related Disorders | 59 | 96572 | 1.901 | 1.970 | 0.416 | 4173 | 8 | Details |
| Technology | 61 | 105432 | 1.179 | 1.101 | 0.387 | 14816 | 4 | Details |
| Teratology | 9 | 4783 | 0.806 | 0.983 | 0.245 | 147 | 12 | Details |
| Therapeutics | 118 | 286343 | 2.506 | 2.434 | 0.611 | 14057 | 5 | Details |
| Toxicology | 142 | 262048 | 1.237 | 1.203 | 0.296 | 21855 | 6 | Details |
| Transplantation | 49 | 122100 | 1.734 | 1.703 | 0.671 | 4932 | 8 | Details |
| Traumatology | 87 | 115386 | 1.096 | 1.189 | 0.239 | 7655 | 8 | Details |
| Tropical Medicine | 79 | 114570 | 1.792 | 1.773 | 0.481 | 4937 | 8 | Details |
| Urology | 88 | 146654 | 1.154 | 1.212 | 0.255 | 8642 | 8 | Details |
| Vascular Diseases | 189 | 603330 | 2.366 | 2.271 | 0.556 | 19648 | 8 | Details |
| Veterinary Medicine | 176 | 262177 | 1.171 | 1.207 | 0.322 | 13339 | 9 | Details |
| Virology | 58 | 267954 | 5.226 | 3.837 | 1.290 | 6741 | 8 | Details |
| Vital Statistics | 22 | 32878 | 14.357 | 9.111 | 6.348 | 540 | 2 | Details |
| Women's Health | 22 | 17110 | 1.118 | 1.193 | 0.227 | 1481 | 7 | Details |
| Zoology | 51 | 93873 | 0.756 | 0.792 | 0.194 | 7385 | 8 | Details |
| (All Fields) | 20869 | 30318351 | 2.210 | 2.113 | 0.581 | 1372576 | 7 | Details |
Note: the data used by the tools on this page are derived from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.