What's new for DeCS 2020
This article highlights changes to DeCS in 2020.
Totals by type of terminology
DeCS language 2019 2020 variation 19/20 amount % Descriptors English 33889 34041 152 0,45% Spanish (America) 33889 34041 152 0,45% Spanish (Spain) 33889 34041 152 0,45% Portuguese 33889 34041 152 0,45% Termos Alternativos English 214448 218803 4355 2,03% Spanish (America) 58101 60670 2569 4,42% Spanish (Spain) 48913 51380 2467 5,04% Portuguese 63548 67078 3530 5,55% Qualifiers English 77 77 0 0,00% Spanish (America) 77 77 0 0,00% Spanish (Spain) 77 77 0 0,00% Portuguese 77 77 0 0,00% Total 520659 534403 13744 2,64%
Changes for 2020
Subcategories receiving the greatest number of new descriptors:
Subcat code Subcategory name Amount of descriptors B01 Eukaryota 20 D02 Organic Chemicals 20 D12 Amino Acids, Peptides, and Proteins 20 E05 Investigative Techniques 19 D08 Enzymes and Coenzymes 16 C23 Pathological Conditions, Signs and Symptoms 15 N06 Environment and Public Healt 15 J01 Technology, Industry, and Agriculture 13 C11 Eye Diseases 12 C10 Nervous System Diseases 11 E02 Therapeutics 11 L01 Information Science 11
New descriptors per category
The total is greater than the number of new descriptors because some of them occur in more than one category.
DeCS/MeSH tree category Amount of descriptors A - Anatomy 10 B - Organisms 22 C - Diseases 51 D - Chemicals and Drugs 75 E - Analytical, Diagnostic and Therapeutic Techniques and Equipment 39 F - Psychiatry and Psychology 23 G - Phenomena and Processes 33 H - Disciplines and Occupations 10 HP - Homeopathy 0 I - Anthropology, Education, Sociology and Social Phenomena 12 J - Technology, Industry, Agriculture 19 K - Humanities 2 L - Information Science 11 M - Named Groups 4 N - Health Care 34 SH - Science and Health 2 SP - Public Health 2 V - Publication Characteristics 2 VS - Health Surveillance 0 Z - Geographicals 0
2020 DeCS 2020 is available for online searching through DeCS Search or directly from VHL Regional Portal.
MeSH 2020 highlights:
MeSH is available in RDF linked data format.
MeSH 2020 is available for download in XML, ASCII and MeSH / MARC.
1) One new publication type is available for MEDLINE indexing in 2020:
Indexing policy: Use for the original report of the conduct or results of a specific randomized veterinary clinical trial in which animal participants are randomly assigned to receive one or more interventions.
Use the MeSH headings Clinical Trials, Veterinary as Topic and Randomization for the general design, methodology, economics, etc. of randomized veterinary clinical trials.
2) Four preferred terms are changed for publication types that are used for MEDLINE Indexing:
• Evaluation Studies -> Evaluation Study
• Government Document -> Government Publication
• Validation Studies -> Validation Study
• Webcasts -> Webcast
One MeSH heading is changed to a publication type. This publication type is used for Cataloging only. A new "as Topic" MeSH heading was not created:
• Biobibliography as Topic -> Biobibliography
3) MeSH "as Topic" Headings:
4) A total of ten preferred terms are changed for "as Topic" MeSH headings:
• Autobiography as Topic -> Autobiographies as Topic
• Bibliography as Topic -> Bibliographies as Topic
• Biography as Topic -> Biographies as Topic
• Duplicate Publication as Topic -> Duplicate Publications as Topic
Four additional preferred terms for "as Topic" MeSH headings are changed. Note that their corresponding publication types are used for Cataloging only:
• Diary as Topic -> Diaries as Topic
• Exhibits as Topic -> Exhibitions as Topic
• Programmed Instruction as Topic -> Programmed Instructions as Topic
• Study Guide as Topic -> Study Guides as Topic
Two preferred terms for "as Topic" MeSH headings are changed to remove "as Topic" from the string. Note that these headings are not changed to publication types.
• Abstracting and Indexing as Topic -> Abstracting and Indexing
• Advertising as Topic -> Advertising
For a list of MeSH/DeCS tree hierarchical changes, see "DeCS and MeSH tree number changes"
Alterações significativas na categoria C (Doenças) incluem:
1) MeSH Categories C01, C02, and C03 are consolidated
• Consolidated the tree nodes for Bacterial Infections and Mycoses [C01], Virus Diseases [C02], Parasitic Diseases [C03] into a single category Infections (C01).
• The MeSH heading Infections is the new name for category C01.
• This tree reconfiguration will make retrieval for Infections inclusive of all terms under Infections for 2020.
• Two new MeSH headings are added as children to category Infections (C01).
2) MeSH Category Cell Physiological Phenomena (G04) is updated
• One new MeSH heading is added as a child to category Cell Death (G04.146) and six new headings are added as grandchildren:
• Five new MeSH headings are added as children to category Autophagy (G04.011)
Note: This new MeSH heading is in two tree positions as a child to Autophagy and Regulated Cell Death
Note: In 2020, the preferred term for Mitochondrial Degradation is replaced by Mitophagy. This MeSH heading is in two tree positions as a child to Autophagy and Mitochondrial Turnover [G04.599].
• Autophagy is removed from categories Cell Death [G04.146] and Phagocytosis [G04.417.350] and repositioned as a child to Cell Physiological Phenomena [G04].
• Necrosis and its children are removed from Cell Physiological Phenomena [G04.146.638] and retain their positions in Pathological Conditions, Signs and Symptoms [C23.550.717].
Several special projects resulted in the following new 2020 MeSH headings:
1) Food related headings:
2) Health Services headings:
3) Person headings:
4) Psychiatry and Psychology related headings:
5) Toxicity headings:
6) 11 new MeSH headings on non-human primate terminology:
2) Coniferophyta merged into Tracheophyta. Coniferophyta is retained as an entry term. Punicaceae merged into Lythraceae. Punicaceae is retained as an entry term. Taxodiaceae merged into Cupressaceae. Taxodiaceae is retained as an entry term.
1) Case Reports with Single-Case Studies as Topic, which are trials that consider an individual patient as the sole unit of observation in a study investigating the efficacy or side-effects of different interventions to determine the optimal intervention for an individual patient using objective data-driven criteria. Also note that Single-Case Studies as Topic is used for indexing articles on the general design, methodology, etc. for Single Case Trials.
2) Food Fussiness with Avoidant Restrictive Food Intake Disorder, which is an eating or feeding disturbance that manifests as persistent failure to meet nutritional needs leading to low weight, nutritional deficiency, dependence on supplemental feedings, and/or psychosocial functioning.
Phosphatidylinositol 3-Kinase/antagonists & inhibitors
Radio Waves/therapeutic use
Tumor Necrosis Factors/antagonists & inhibitors
Tybaert S. MEDLINE Data Changes - 2020. NLM Tech Bull. 2019 Nov-Dec;(431):e6a. Disponível na Internet: https://www.nlm.nih.gov/pubs/techbull/nd19/nd19_medline_data_changes_2020.html#mesh_changes
Adaptation: Health Terminologies and Classifications Section at BIREME/PAHO/WHO
Last update: April, 2020