Instructions for updating strategies used in searching thematic areas of the VHL

 

 

In view of the revision of the Public Health category in DeCS, which resulted in many alterations in its hierarchic structure, as well as the annual update carried through in the MeSH vocabulary which is then incorporated into DeCS, the need for the revision and update of the search strategies of the thematic areas of the VHL have become crucial. This revision applies both to the strategies that use descriptors as well as to those using hierarchic codes.

 

To achieve the update of the strategies, the addresses for the two versions of DeCS are available, where consultations using the alphabetical, hierarchic and kwic indices can be made:

 

- version 2004 from which the strategies were based: http://decs2004.bvsalud.org/I/homepagei.htm

 

- version 2006 from which the strategies must now be based: http://decs.bvs.br/I/homepagei.htm

 

In version 2006 of DeCS, under the ‘DeCS news’ link, more detailed information is available of the revision of the Public Health category, of the new Health Surveillance; and Science and Health categories, of the new MeSH/DeCS descriptors and of those modified and eliminated, as well as information of previous DeCS editions.

 

In order to update search strategies containing hierarchic codes (or tree numbers) from MeSH categories, see changes taken place between the years 2004 and 2006 in the following tables:

 

http://decs.bvs.br/P/mnchg2005.htm

http://decs.bvs.br/P/mnchg2006.htm

 

 

Methodology for updating search strategies

 

- check if hierarchic codes and/or descriptors of your strategy are still valid in the DeCS 2006 version

 

- if so, leave them as they are

 

- if not found, check in version 2004 which descriptor the hierarchic codes belonged to and look for the new descriptors and respective hierarchic codes in version 2006

 

- see also the ‘DeCS 2006 edition’ link under ‘DeCS news’ in the following page: http://decs.bvs.br/I/decs2006i.htm

 

Example of a strategy to be updated:

 

 

(ex SP4.405.350.364$ or ex SP8.473.654.412.052.080.115.020.020$ or ex D05.723$ or ex D27.720.723$) or (ti Pesticide$ or ti Plaguicida$ or ti Praguicida$) [Subject descriptor]

 

 

Updating that will have to be made:

 

 

Ø       SP4.405.350.364

This hierarchic code that corresponded to the Pesticides descriptor in SP4 (Environmental Health) was modified. The new hierarchic code for the descriptor in the SP4 (Environmental Health) category is: SP4.001.022.238.

 

Ø       Explode, truncation

 

The "ex" (from explode) that precedes the hierarchic code and the “$" sign (truncation), indicate that the Pesticides descriptor and all its more specific descriptors will be included in the recovery of literature.

 

Ø       SP8.473.654.412.052.080.115.020.020

This hierarchic code, that continues to exist, also belongs to the Pesticides descriptor since, being DeCS polyhierarchical, a descriptor can be located in more than one of its categories/subcategories. It is not necessary to again include in the strategy this descriptor or the other hierarchic branch where the descriptor is found, because it is already also duly contemplated in SP4.001.022.238.

 

Ø       Unnecessary truncation

Another detail for the elaboration of the strategies is that when a hierarchic code of a descriptor is used under which there is no other more specific descriptor, it is unnecessary to follow it with the “$” sign

 

Ø       D05.723

This hierarchic code does no longer appear in version 2004 of DeCS, since the D05 subcategory of MeSH was eliminated in 2004. Its content was transferred to the D27.888 subcategory. In 2005 the subcategory was recreated by MeSH with other content: Macromolecular Substances.

 

Ø       Title words

The words of the title continue in the search strategy expression without alterations.

 

Ø       Pesticides [D27.720.723] and Pesticides [D27.888.723]

These hierarchic branches are almost identical, except for the descriptor Pesticide Residues, present in the D27.888.723 branch and absent in the D27.720.723 branch

 

One should remember that the same descriptor can be inserted in different hierarchies in the DeCS tree, with variations in the specific descriptors. If it is necessary to consider different specific descriptors, the different hierarchic branches can be included in the strategy

 

 

Final recommendation

 

Thus, contemplating all the existing specific descriptors in the various hierarchic branches where the descriptor Pesticides is inserted, the new search strategy must be as follows:

 

(ex SP4.001.022.238$ or ex D27.888.723$) [Subject descriptor] or (ti Pesticide$ or ti Plaguicida$ or ti Praguicida$) [Title words]

 

 

Annex:

 

Cited hierarchic branches in the example in the two versions of DeCS:

 

 

DeCS 2004:

 

Pesticides [D27.888.723]

               Chemosterilants [D27.888.723.141]

               Fungicides, Industrial [D27.888.723.288]

               Herbicides [D27.888.723.366]

                  Defoliants, Chemical [D27.888.723.366.181]

                  Herbicides, Carbamate [D27.888.723.366.448]

                  Herbicides, Triazine [D27.888.723.366.477]

                  Herbicides, Urea [D27.888.723.366.506]

               Insect Repellents [D27.888.723.441]

               Insecticides [D27.720.723.491]

                  Insecticides, Botanical [D27.720.723.491.324]

                  Insecticides, Carbamate [D27.720.723.491.408]

                  Insecticides, Organochlorine [D27.720.723.491.491]

                  Insecticides, Organophosphate [D27.720.723.491.574]

                  Insecticides, Organothiophosphate [D27.720.723.491.657]

               Molluscacides [D27.888.723.596]

               Pesticide Residues [D27.888.723.697]

               Pesticide Synergists [D27.888.723.748]

               Rodenticides [D27.888.723.853]

 

Pesticides [D27.888.723]

               Chemosterilants [D27.888.723.141]

               Fungicides, Industrial [D27.888.723.288]

               Herbicides [D27.888.723.366]

                  Defoliants, Chemical [D27.888.723.366.181]

                  Herbicides, Carbamate [D27.888.723.366.448]

                  Herbicides, Triazine [D27.888.723.366.477]

                  Herbicides, Urea [D27.888.723.366.506]

               Insect Repellents [D27.888.723.441]

               Insecticides [D27.720.723.491]

                  Insecticides, Botanical [D27.720.723.491.324]

                  Insecticides, Carbamate [D27.720.723.491.408]

                  Insecticides, Organochlorine [D27.720.723.491.491]

                  Insecticides, Organophosphate [D27.720.723.491.574]

                  Insecticides, Organothiophosphate [D27.720.723.491.657]

               Molluscacides [D27.888.723.596]

               Pesticide Residues [D27.888.723.697]

               Pesticide Synergists [D27.888.723.748]

               Rodenticides [D27.888.723.853]

 

Pesticides [SP4.405.350.364]

                  Algicides [SP4.405.350.364.204]

                  Bactericides [SP4.405.350.364.205]

                     Bacteriophages [SP4.405.350.364.205.410]

                  Fungicides, Industrial [SP4.405.350.364.206]

                  Herbicides [SP4.405.350.364.207]

                  Pesticide Utilization [SP4.405.350.364.309]

 

Pesticides [SP8.473.654.412.052.080.115.020.020]

 

 

 

DeCS 2006:

 

Pesticides [D27.720.723]

               Chemosterilants [D27.720.723.141]

               Fungicides, Industrial [D27.720.723.288]

               Herbicides [D27.720.723.366]

                  Defoliants, Chemical [D27.720.723.366.181]

               Insect Repellents [D27.720.723.441]

               Insecticides [D27.720.723.491]

               Molluscacides [D27.720.723.596]

               Pesticide Synergists [D27.720.723.748]

               Rodenticides [D27.720.723.853]

 

Pesticides [D27.888.723]

               Chemosterilants [D27.888.723.141]

               Fungicides, Industrial [D27.888.723.288]

               Herbicides [D27.888.723.366]

                  Defoliants, Chemical [D27.888.723.366.181]

               Insect Repellents [D27.888.723.441]

               Insecticides [D27.888.723.491]

               Molluscacides [D27.888.723.596]

               Pesticide Residues [D27.888.723.697]

               Pesticide Synergists [D27.888.723.748]

               Rodenticides [D27.888.723.853]

 

Pesticides [SP4.001.022.238]

                  Creosote [SP4.001.022.238.349]

                  Algicides [SP4.001.022.238.354]

                  Bactericides [SP4.001.022.238.359]

                  Fungicides, Industrial [SP4.001.022.238.364]

                  Herbicides [SP4.001.022.238.369]

                  Insect Repellents [SP4.001.022.238.374]

                  Rodenticides [SP4.001.022.238.379]

                  Larvicides [SP4.001.022.238.384]

                  Insecticides [SP4.001.022.238.389]

                     Carbaryl [SP4.001.022.238.389.215]

                     Carbamates [SP4.001.022.238.389.220]

                     Carbofuran [SP4.001.022.238.389.225]

                     Insecticides, Organochlorine [SP4.001.022.238.389.230]

                        Aldrin [SP4.001.022.238.389.230.036]

                        Chlordan [SP4.001.022.238.389.230.041]

                        Dichlorodiphenyldichloroethane [SP4.001.022.238.389.230.046]

                        DDT [SP4.001.022.238.389.230.051]

                        Dieldrin [SP4.001.022.238.389.230.056]

                        Endrin [SP4.001.022.238.389.230.061]

                        Heptachlor [SP4.001.022.238.389.230.066]

                        Toxaphene [SP4.001.022.238.389.230.071]

                     Insecticides, Organophosphate [SP4.001.022.238.389.235]

                        Diazinon [SP4.001.022.238.389.235.076]

                        Malathion [SP4.001.022.238.389.235.081]

                        Parathion [SP4.001.022.238.389.235.086]

                           Methyl Parathion [SP4.001.022.238.389.235.086.022]

 

Pesticides [SP8.473.654.412.052.080.115.020.020]