{"id":"https://openalex.org/W4410453065","doi":"https://doi.org/10.1186/s13643-025-02861-9","title":"Deficiency of B vitamins in women of childbearing age, pregnant, and lactating women in Brazil: a systematic review","display_name":"Deficiency of B vitamins in women of childbearing age, pregnant, and lactating women in Brazil: a systematic review","publication_year":2025,"publication_date":"2025-05-16","ids":{"openalex":"https://openalex.org/W4410453065","doi":"https://doi.org/10.1186/s13643-025-02861-9","pmid":"https://pubmed.ncbi.nlm.nih.gov/40380243","pmcid":"https://www.ncbi.nlm.nih.gov/pmc/articles/12083100"},"language":"en","primary_location":{"id":"doi:10.1186/s13643-025-02861-9","doi":"https://doi.org/10.1186/s13643-025-02861-9","is_oa":true,"landing_page_url":"https://doi.org/10.1186/s13643-025-02861-9","pdf_url":"https://systematicreviewsjournal.biomedcentral.com/counter/pdf/10.1186/s13643-025-02861-9","source":{"id":"https://openalex.org/S82452678","display_name":"Systematic Reviews","issn_l":"2046-4053","issn":["2046-4053"],"is_oa":true,"is_in_doaj":true,"is_core":true,"listed_in":["cwts-core","doaj","dongbi-b","doyens","jufo-1","ki-jl-1","medline","norway-1","oarl","poland-140","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320256","host_organization_name":"BioMed Central","host_organization_lineage":["https://openalex.org/P4310320256","https://openalex.org/P4310319965"],"host_organization_lineage_names":["BioMed Central","Springer Nature"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Systematic Reviews","raw_type":"journal-article"},"volume":null,"type":"review","indexed_in":["crossref","doaj","pubmed"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://systematicreviewsjournal.biomedcentral.com/counter/pdf/10.1186/s13643-025-02861-9","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5051563936","display_name":"Tatiane Salgado Galv\u00e3o de Macedo","orcid":"https://orcid.org/0000-0002-6291-9149","observed_orcids":["https://orcid.org/0000-0002-6291-9149"]},"institutions":[{"id":"https://openalex.org/I40034438","display_name":"Universidade do Estado do Rio de Janeiro","ror":"https://ror.org/0198v2949","country_code":"BR","type":"education","lineage":["https://openalex.org/I40034438"]}],"countries":["BR"],"is_corresponding":true,"raw_author_name":"Tatiane Salgado Galv\u00e3o de Macedo","raw_affiliation_strings":["Postgraduate Program in Food, Nutrition and Health, Institute of Nutrition, State University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil. tatiane_galvao@outlook.com"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Postgraduate Program in Food, Nutrition and Health, Institute of Nutrition, State University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil. tatiane_galvao@outlook.com","institution_ids":["https://openalex.org/I40034438"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5069131737","display_name":"Michel Carlos Mocellin","orcid":"https://orcid.org/0000-0002-8565-7444","observed_orcids":["https://orcid.org/0000-0002-8565-7444"]},"institutions":[{"id":"https://openalex.org/I83648350","display_name":"Universidade Federal do Estado do Rio de Janeiro","ror":"https://ror.org/04tec8z30","country_code":"BR","type":"education","lineage":["https://openalex.org/I83648350"]}],"countries":["BR"],"is_corresponding":false,"raw_author_name":"Michel Carlos Mocellin","raw_affiliation_strings":["Department of Fundamental Nutrition, Nutrition School, Federal University of the State Do Rio de Janeiro, Rio de Janeiro, RJ, Brazil"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Fundamental Nutrition, Nutrition School, Federal University of the State Do Rio de Janeiro, Rio de Janeiro, RJ, Brazil","institution_ids":["https://openalex.org/I83648350"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5024767904","display_name":"Simone Augusta Ribas","orcid":"https://orcid.org/0000-0002-3947-9800","observed_orcids":["https://orcid.org/0000-0002-3947-9800"]},"institutions":[{"id":"https://openalex.org/I83648350","display_name":"Universidade Federal do Estado do Rio de Janeiro","ror":"https://ror.org/04tec8z30","country_code":"BR","type":"education","lineage":["https://openalex.org/I83648350"]}],"countries":["BR"],"is_corresponding":false,"raw_author_name":"Simone Augusta Ribas","raw_affiliation_strings":["Department of Public Health Nutrition, Nutrition School, Federal University of the State Do Rio de Janeiro, Rio de Janeiro, RJ, Brazil"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Public Health Nutrition, Nutrition School, Federal University of the State Do Rio de Janeiro, Rio de Janeiro, RJ, Brazil","institution_ids":["https://openalex.org/I83648350"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5049950464","display_name":"Michelle Teixeira Teixeira","orcid":"https://orcid.org/0000-0002-7529-116X","observed_orcids":["https://orcid.org/0000-0002-7529-116X"]},"institutions":[{"id":"https://openalex.org/I83648350","display_name":"Universidade Federal do Estado do Rio de Janeiro","ror":"https://ror.org/04tec8z30","country_code":"BR","type":"education","lineage":["https://openalex.org/I83648350"]}],"countries":["BR"],"is_corresponding":false,"raw_author_name":"Michelle Teixeira Teixeira","raw_affiliation_strings":["Department of Public Health Nutrition, Nutrition School, Federal University of the State Do Rio de Janeiro, Rio de Janeiro, RJ, Brazil"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Public Health Nutrition, Nutrition School, Federal University of the State Do Rio de Janeiro, Rio de Janeiro, RJ, Brazil","institution_ids":["https://openalex.org/I83648350"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5023054100","display_name":"Alessandra da Silva Pereira","orcid":"https://orcid.org/0000-0002-9382-4724","observed_orcids":["https://orcid.org/0000-0002-9382-4724"]},"institutions":[{"id":"https://openalex.org/I83648350","display_name":"Universidade Federal do Estado do Rio de Janeiro","ror":"https://ror.org/04tec8z30","country_code":"BR","type":"education","lineage":["https://openalex.org/I83648350"]}],"countries":["BR"],"is_corresponding":false,"raw_author_name":"Alessandra da Silva Pereira","raw_affiliation_strings":["Department of Fundamental Nutrition, Nutrition School, Federal University of the State Do Rio de Janeiro, Rio de Janeiro, RJ, Brazil"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Fundamental Nutrition, Nutrition School, Federal University of the State Do Rio de Janeiro, Rio de Janeiro, RJ, Brazil","institution_ids":["https://openalex.org/I83648350"]}]},{"author_position":"middle","author":{"id":null,"display_name":"Gabriel Montalv\u00e3o Palermo","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I83648350","display_name":"Universidade Federal do Estado do Rio de Janeiro","ror":"https://ror.org/04tec8z30","country_code":"BR","type":"education","lineage":["https://openalex.org/I83648350"]}],"countries":["BR"],"is_corresponding":false,"raw_author_name":"Gabriel Montalv\u00e3o Palermo","raw_affiliation_strings":["Nutrition School, Federal University of the State of Rio de Janeiro, Rio de Janeiro, RJ, Brazil"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Nutrition School, Federal University of the State of Rio de Janeiro, Rio de Janeiro, RJ, Brazil","institution_ids":["https://openalex.org/I83648350"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5011692401","display_name":"C\u00edntia Chaves Curioni","orcid":"https://orcid.org/0000-0002-5160-9567","observed_orcids":["https://orcid.org/0000-0002-5160-9567"]},"institutions":[{"id":"https://openalex.org/I40034438","display_name":"Universidade do Estado do Rio de Janeiro","ror":"https://ror.org/0198v2949","country_code":"BR","type":"education","lineage":["https://openalex.org/I40034438"]}],"countries":["BR"],"is_corresponding":false,"raw_author_name":"Cintia Chaves Curioni","raw_affiliation_strings":["Department of Social Nutrition, Institute of Nutrition, State University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Social Nutrition, Institute of Nutrition, State University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil","institution_ids":["https://openalex.org/I40034438"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5051563936"],"corresponding_institution_ids":["https://openalex.org/I40034438"],"apc_list":{"value":3090,"currency":"USD","value_usd":3090},"apc_paid":{"value":3090,"currency":"USD","value_usd":3090},"fwci":0.6245,"has_fulltext":true,"cited_by_count":4,"citation_normalized_percentile":{"value":0.55811363,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":98},"biblio":{"volume":"14","issue":"1","first_page":"111","last_page":"111"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10499","display_name":"Folate and B Vitamins Research","score":0.9994999766349792,"subfield":{"id":"https://openalex.org/subfields/2745","display_name":"Rheumatology"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},"topics":[{"id":"https://openalex.org/T10499","display_name":"Folate and B Vitamins Research","score":0.9994999766349792,"subfield":{"id":"https://openalex.org/subfields/2745","display_name":"Rheumatology"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T13112","display_name":"Nutrition and Health Studies","score":0.00019999999494757503,"subfield":{"id":"https://openalex.org/subfields/2739","display_name":"Public Health, Environmental and Occupational Health"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T10452","display_name":"Iron Metabolism and Disorders","score":0.0,"subfield":{"id":"https://openalex.org/subfields/2720","display_name":"Hematology"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/folate-deficiency","display_name":"folate deficiency","score":0.9190000295639038},{"id":"https://openalex.org/keywords/vitamin-b12-deficiency","display_name":"vitamin B12 deficiency","score":0.9940000176429749},{"id":"https://openalex.org/keywords/vitamin-b6","display_name":"vitamin B6","score":0.8569999933242798},{"id":"https://openalex.org/keywords/women-of-reproductive-age","display_name":"women of reproductive age","score":0.9100000262260437},{"id":"https://openalex.org/keywords/pregnant-women","display_name":"pregnant women","score":0.8659999966621399},{"id":"https://openalex.org/keywords/lactating-women","display_name":"lactating women","score":0.9990000128746033},{"id":"https://openalex.org/keywords/prevalence","display_name":"prevalence","score":0.527999997138977},{"id":"https://openalex.org/keywords/biochemical-markers","display_name":"biochemical markers","score":0.8119999766349792},{"id":"https://openalex.org/keywords/brazil","display_name":"Brazil","score":0.34299999475479126}],"concepts":[{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.9767473340034485},{"id":"https://openalex.org/C2779234561","wikidata":"https://www.wikidata.org/wiki/Q11995","display_name":"Pregnancy","level":2,"score":0.49273040890693665},{"id":"https://openalex.org/C131872663","wikidata":"https://www.wikidata.org/wiki/Q5284418","display_name":"Obstetrics","level":1,"score":0.43610578775405884},{"id":"https://openalex.org/C99454951","wikidata":"https://www.wikidata.org/wiki/Q932068","display_name":"Environmental health","level":1,"score":0.366355299949646},{"id":"https://openalex.org/C512399662","wikidata":"https://www.wikidata.org/wiki/Q3505712","display_name":"Family medicine","level":1,"score":0.34649768471717834},{"id":"https://openalex.org/C29456083","wikidata":"https://www.wikidata.org/wiki/Q1221899","display_name":"Gynecology","level":1,"score":0.3377722501754761},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.0},{"id":"https://openalex.org/C54355233","wikidata":"https://www.wikidata.org/wiki/Q7162","display_name":"Genetics","level":1,"score":0.0}],"mesh":[{"descriptor_ui":"D000328","descriptor_name":"Adult","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D001938","descriptor_name":"Brazil","qualifier_ui":"Q000453","qualifier_name":"epidemiology","is_major_topic":false},{"descriptor_ui":"D003430","descriptor_name":"Cross-Sectional Studies","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D005260","descriptor_name":"Female","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D005492","descriptor_name":"Folic Acid","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D005494","descriptor_name":"Folic Acid Deficiency","qualifier_ui":"Q000453","qualifier_name":"epidemiology","is_major_topic":false},{"descriptor_ui":"D006801","descriptor_name":"Humans","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D007774","descriptor_name":"Lactation","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D011247","descriptor_name":"Pregnancy","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D014803","descriptor_name":"Vitamin B Complex","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D014804","descriptor_name":"Vitamin B Deficiency","qualifier_ui":"Q000453","qualifier_name":"epidemiology","is_major_topic":true},{"descriptor_ui":"D014806","descriptor_name":"Vitamin B 12 Deficiency","qualifier_ui":"Q000453","qualifier_name":"epidemiology","is_major_topic":false},{"descriptor_ui":"D015995","descriptor_name":"Prevalence","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false}],"locations_count":4,"locations":[{"id":"doi:10.1186/s13643-025-02861-9","doi":"https://doi.org/10.1186/s13643-025-02861-9","is_oa":true,"landing_page_url":"https://doi.org/10.1186/s13643-025-02861-9","pdf_url":"https://systematicreviewsjournal.biomedcentral.com/counter/pdf/10.1186/s13643-025-02861-9","source":{"id":"https://openalex.org/S82452678","display_name":"Systematic Reviews","issn_l":"2046-4053","issn":["2046-4053"],"is_oa":true,"is_in_doaj":true,"is_core":true,"listed_in":["cwts-core","doaj","dongbi-b","doyens","jufo-1","ki-jl-1","medline","norway-1","oarl","poland-140","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320256","host_organization_name":"BioMed Central","host_organization_lineage":["https://openalex.org/P4310320256","https://openalex.org/P4310319965"],"host_organization_lineage_names":["BioMed Central","Springer Nature"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Systematic Reviews","raw_type":"journal-article"},{"id":"pmh:oai:pubmedcentral.nih.gov:12083100","doi":null,"is_oa":true,"landing_page_url":"https://www.ncbi.nlm.nih.gov/pmc/articles/12083100","pdf_url":null,"source":{"id":"https://openalex.org/S2764455111","display_name":"PubMed Central","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Syst Rev","raw_type":"Text"},{"id":"pmid:40380243","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/40380243","pdf_url":null,"source":{"id":"https://openalex.org/S4306525036","display_name":"PubMed","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Systematic reviews","raw_type":"Systematic Review"},{"id":"pmh:oai:doaj.org/article:ec2539d7aedb409482d44fc78fea3b06","doi":null,"is_oa":true,"landing_page_url":"https://doaj.org/article/ec2539d7aedb409482d44fc78fea3b06","pdf_url":null,"source":{"id":"https://openalex.org/S4306401280","display_name":"DOAJ (DOAJ: Directory of Open Access Journals)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-sa","license_id":"https://openalex.org/licenses/cc-by-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Systematic Reviews, Vol 14, Iss 1, Pp 1-13 (2025)","raw_type":"article"}],"best_oa_location":{"id":"doi:10.1186/s13643-025-02861-9","doi":"https://doi.org/10.1186/s13643-025-02861-9","is_oa":true,"landing_page_url":"https://doi.org/10.1186/s13643-025-02861-9","pdf_url":"https://systematicreviewsjournal.biomedcentral.com/counter/pdf/10.1186/s13643-025-02861-9","source":{"id":"https://openalex.org/S82452678","display_name":"Systematic Reviews","issn_l":"2046-4053","issn":["2046-4053"],"is_oa":true,"is_in_doaj":true,"is_core":true,"listed_in":["cwts-core","doaj","dongbi-b","doyens","jufo-1","ki-jl-1","medline","norway-1","oarl","poland-140","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320256","host_organization_name":"BioMed Central","host_organization_lineage":["https://openalex.org/P4310320256","https://openalex.org/P4310319965"],"host_organization_lineage_names":["BioMed Central","Springer Nature"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Systematic Reviews","raw_type":"journal-article"},"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/3","score":1.0,"display_name":"Good health and well-being"},{"id":"https://metadata.un.org/sdg/2","score":0.8409000039100647,"display_name":"Zero hunger"}],"study_designs":[{"id":"https://openalex.org/study-designs/systematic-review","display_name":"Systematic Review"}],"awards":[{"id":"https://openalex.org/G2556776568","display_name":null,"funder_award_id":"443024/2019-7","funder_id":"https://openalex.org/F4320322025","funder_display_name":"Conselho Nacional de Desenvolvimento Cient\u00edfico e Tecnol\u00f3gico"},{"id":"https://openalex.org/G8216700073","display_name":null,"funder_award_id":"E-26/200.798/2020","funder_id":"https://openalex.org/F4320322749","funder_display_name":"Funda\u00e7\u00e3o Carlos Chagas Filho de Amparo \u00e0 Pesquisa do Estado do Rio de Janeiro"}],"funders":[{"id":"https://openalex.org/F4320321091","display_name":"Coordena\u00e7\u00e3o de Aperfei\u00e7oamento de Pessoal de N\u00edvel Superior","ror":"https://ror.org/00x0ma614"},{"id":"https://openalex.org/F4320322025","display_name":"Conselho Nacional de Desenvolvimento Cient\u00edfico e Tecnol\u00f3gico","ror":"https://ror.org/03swz6y49"},{"id":"https://openalex.org/F4320322749","display_name":"Funda\u00e7\u00e3o Carlos Chagas Filho de Amparo \u00e0 Pesquisa do Estado do Rio de Janeiro","ror":"https://ror.org/03kk0s825"}],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W4410453065.pdf","grobid_xml":"https://content.openalex.org/works/W4410453065.grobid-xml"},"referenced_works_count":65,"referenced_works":["https://openalex.org/W12579769","https://openalex.org/W336151889","https://openalex.org/W1582290513","https://openalex.org/W1683027565","https://openalex.org/W1768775693","https://openalex.org/W1897775748","https://openalex.org/W1920950589","https://openalex.org/W1961258481","https://openalex.org/W1970739181","https://openalex.org/W1997807579","https://openalex.org/W1998791960","https://openalex.org/W2000226595","https://openalex.org/W2014314508","https://openalex.org/W2022236323","https://openalex.org/W2042949597","https://openalex.org/W2048132934","https://openalex.org/W2049603787","https://openalex.org/W2052981929","https://openalex.org/W2077940866","https://openalex.org/W2081012446","https://openalex.org/W2081462847","https://openalex.org/W2092381158","https://openalex.org/W2095257764","https://openalex.org/W2099141842","https://openalex.org/W2104064852","https://openalex.org/W2118076374","https://openalex.org/W2119160774","https://openalex.org/W2121482791","https://openalex.org/W2128367532","https://openalex.org/W2145515901","https://openalex.org/W2156536991","https://openalex.org/W2158305865","https://openalex.org/W2161643046","https://openalex.org/W2164638206","https://openalex.org/W2238597056","https://openalex.org/W2331478100","https://openalex.org/W2394581078","https://openalex.org/W2414699725","https://openalex.org/W2417616718","https://openalex.org/W2462300305","https://openalex.org/W2465513831","https://openalex.org/W2511986143","https://openalex.org/W2521570202","https://openalex.org/W2539051643","https://openalex.org/W2560438049","https://openalex.org/W2605786711","https://openalex.org/W2606515327","https://openalex.org/W2612452990","https://openalex.org/W2702300376","https://openalex.org/W2747943965","https://openalex.org/W2755444171","https://openalex.org/W2939241278","https://openalex.org/W2939308742","https://openalex.org/W2947642719","https://openalex.org/W2978814846","https://openalex.org/W2979503185","https://openalex.org/W2998012882","https://openalex.org/W3095118249","https://openalex.org/W3118615836","https://openalex.org/W3143467821","https://openalex.org/W4220928870","https://openalex.org/W4229804223","https://openalex.org/W4238666307","https://openalex.org/W4317932962","https://openalex.org/W6711910877"],"related_works":["https://openalex.org/W4317932962","https://openalex.org/W6958984262","https://openalex.org/W7119350651","https://openalex.org/W6958953857","https://openalex.org/W6958336967","https://openalex.org/W6977082044","https://openalex.org/W3203761680","https://openalex.org/W4281621207","https://openalex.org/W6906497032","https://openalex.org/W4214683249"],"abstract_inverted_index":{"OBJECTIVE:":[0],"This":[1,24],"study":[2,143],"aimed":[3],"to":[4,34,133,193,201],"evaluate":[5],"the":[6,49,89,96,172],"prevalence":[7,128],"of":[8,15,46,53,174,196],"B-complex":[9,152],"vitamin":[10,197],"deficiencies":[11,118,136],"in":[12,39],"Brazilian":[13,50,65,191],"women":[14],"childbearing":[16],"age,":[17],"pregnant":[18],"women,":[19],"and":[20,29,37,48,55,84,113,121,200],"lactating":[21],"women.":[22],"METHODS:":[23],"systematic":[25],"review":[26],"analyzed":[27],"cross-sectional":[28],"cohort":[30],"studies":[31,101,123,158,170,188],"published":[32],"up":[33,132],"August":[35],"2023":[36],"indexed":[38],"MEDLINE,":[40],"SciELO,":[41],"LILACS,":[42],"Scopus,":[43],"Embase,":[44],"Web":[45],"Science,":[47],"Digital":[51],"Library":[52],"Theses":[54],"Dissertations.":[56],"Additional":[57],"data":[58],"were":[59,75,102,119,124,137,154],"obtained":[60],"by":[61],"contacting":[62],"researchers":[63],"from":[64],"public":[66],"universities.":[67],"Studies":[68],"assessing":[69],"deficiency":[70,127,198],"rates":[71,199],"using":[72,88],"biochemical":[73],"markers":[74],"included.":[76,103],"Two":[77],"reviewers":[78],"independently":[79],"selected":[80],"studies,":[81],"extracted":[82],"data,":[83],"assessed":[85],"methodological":[86,160],"quality":[87],"Joanna":[90],"Briggs":[91],"Institute":[92],"tool.":[93],"RESULTS:":[94],"Of":[95],"3772":[97],"records":[98],"identified,":[99],"13":[100],"Only":[104],"folate":[105],"(n":[106,110,115],"=":[107,111,116],"13),":[108],"B12":[109,126],"11),":[112],"B6":[114],"1)":[117],"investigated,":[120],"all":[122,190],"cross-sectional.":[125],"varied":[129],"widely,":[130],"reaching":[131],"29.4%.":[134],"Folate":[135],"generally":[138],"low,":[139],"with":[140],"only":[141],"one":[142],"reporting":[144],"a":[145,175,182],"rate":[146],"as":[147,149],"high":[148],"37%.":[150],"Other":[151],"vitamins":[153],"insufficiently":[155],"studied.":[156],"Most":[157],"had":[159],"limitations,":[161],"particularly":[162],"small":[163],"sample":[164],"sizes.":[165],"The":[166],"significant":[167],"heterogeneity":[168],"across":[169,189],"limited":[171],"feasibility":[173],"pooled":[176],"quantitative":[177],"meta-analysis.":[178],"CONCLUSION:":[179],"There":[180],"is":[181],"clear":[183],"need":[184],"for":[185],"more":[186],"robust":[187],"regions":[192],"improve":[194],"understanding":[195],"support":[202],"effective":[203],"nutritional":[204],"interventions.":[205],"SYSTEMATIC":[206],"REVIEW":[207],"REGISTRATION:":[208],"PROSPERO":[209],"CRD42020188474.":[210]},"counts_by_year":[{"year":2026,"cited_by_count":3},{"year":2025,"cited_by_count":1}],"updated_date":"2026-10-31T12:09:11.096373","created_date":"2025-05-17T00:00:00"}
