The Status of Vitamin B12 and Folate among Chinese Women: A Population-Based Cross-Sectional Study in Northwest China
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{"title"=>"The status of vitamin B12 and folate among Chinese women: A population-based cross-sectional study in northwest China", "type"=>"journal", "authors"=>[{"first_name"=>"Shaonong", "last_name"=>"Dang", "scopus_author_id"=>"7003929527"}, {"first_name"=>"Hong", "last_name"=>"Yan", "scopus_author_id"=>"57188677927"}, {"first_name"=>"Lingxia", "last_name"=>"Zeng", "scopus_author_id"=>"7401904324"}, {"first_name"=>"Quanli", "last_name"=>"Wang", "scopus_author_id"=>"56097697300"}, {"first_name"=>"Qiang", "last_name"=>"Li", "scopus_author_id"=>"36072924100"}, {"first_name"=>"Shengbin", "last_name"=>"Xiao", "scopus_author_id"=>"7402022614"}, {"first_name"=>"Xiaojing", "last_name"=>"Fan", "scopus_author_id"=>"56298927200"}], "year"=>2014, "source"=>"PLoS ONE", "identifiers"=>{"pmid"=>"25390898", "doi"=>"10.1371/journal.pone.0112586", "sgr"=>"84911453808", "scopus"=>"2-s2.0-84911453808", "issn"=>"19326203", "pui"=>"600489343"}, "id"=>"a0d2eada-ceac-3a54-ab8e-d60e300009a1", "abstract"=>"OBJECTIVE: To assess the status of the vitamin B12 and folate of Chinese women living in northwest China.\\n\\nMETHODS: A population-based cross-sectional study was conducted in 2008 among Chinese women aged 10-49 years living in Shaanxi province of northwest China. A stratified multistage random sampling method was adopted to obtain a sample of 1170 women. The women were interviewed for collection of their background information and their plasma vitamin B12 and folate were measured with the immunoassay method. The status of both vitamins was evaluated and the prevalence of deficiency was estimated.\\n\\nRESULTS: The median value of the women was 214.5 pg/mL for vitamin B12 and 4.6 ng/mL for folate. The urban women had a significantly higher vitamin B12 (254.1 vs. 195.9 pg/mL) but lower folate (4.4 vs. 4.7 ng/mL) than rural women. Total prevalence of deficiency was 45.5% (95% CI: 42.6% ∼ 48.4%) for vitamin B12 and 14.7% (95% CI: 12.6% ∼ 16.8%) for folate. About 36% of women presented vitamin B12 deficiency alone, 5.2% belonged to folate deficiency alone and 9.5% was combined deficiency in both vitamins. More than 25% of the women were in marginal vitamin B12 status (200-299 pg/mL) and 60% in marginal status of folate (3-6 ng/mL). About 75.2% of rural women with folate deficiency were deficient in vitamin B12 and 46% for urban women. Quantile regression model found decreasing coefficient of folate status across 73 different quantiles of vitamin B12, which indicated that the women with folate deficiency had lower vitamin B12 significantly compared with those with no deficiency.\\n\\nCONCLUSIONS: The deficiency of vitamin B12 and folate is still prevalent among the Chinese women in northwest China. Vitamin B12 deficiency could be more serious and the improvement of poor vitamin B12 status should be invoked when practicing the supplementation of folate against the neural tube defects in northwest China.", "link"=>"http://www.mendeley.com/research/status-vitamin-b12-folate-among-chinese-women-populationbased-crosssectional-study-northwest-china-1", "reader_count"=>13, "reader_count_by_academic_status"=>{"Professor > Associate Professor"=>1, "Student > Doctoral Student"=>3, "Student > Ph. D. Student"=>1, "Student > Postgraduate"=>2, "Student > Master"=>3, "Other"=>3}, "reader_count_by_user_role"=>{"Professor > Associate Professor"=>1, "Student > Doctoral Student"=>3, "Student > Ph. D. Student"=>1, "Student > Postgraduate"=>2, "Student > Master"=>3, "Other"=>3}, "reader_count_by_subject_area"=>{"Nursing and Health Professions"=>1, "Medicine and Dentistry"=>8, "Agricultural and Biological Sciences"=>3, "Immunology and Microbiology"=>1}, "reader_count_by_subdiscipline"=>{"Medicine and Dentistry"=>{"Medicine and Dentistry"=>8}, "Immunology and Microbiology"=>{"Immunology and Microbiology"=>1}, "Agricultural and Biological Sciences"=>{"Agricultural and Biological Sciences"=>3}, "Nursing and Health Professions"=>{"Nursing and Health Professions"=>1}}, "group_count"=>1}

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Figshare

  • {"files"=>["https://ndownloader.figshare.com/files/1790842"], "description"=>"<p>Circles represent quantile regression estimates, and the shaded areas around the quantile regression estimates were the 95% confidence intervals. The dashed line was OLS estimate, and the dash-dotted lines showed the OLS 95% confidence interval. Estimates shown here compared folate deficiency with no-deficiency.</p>", "links"=>[], "tags"=>["Northwest China ObjectiveTo", "Vitamin B 12 deficiency", "Chinese women", "vitamin B 12", "vitamin B 12 status", "ci", "Quantile regression model", "plasma vitamin B 12", "Folate deficiency"], "article_id"=>1238733, "categories"=>["Biological Sciences"], "users"=>["Shaonong Dang", "Hong Yan", "Lingxia Zeng", "Quanli Wang", "Qiang Li", "Shengbin Xiao", "Xiaojing Fan"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0112586.g004", "stats"=>{"downloads"=>0, "page_views"=>32, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Quantile_regression_and_ordinary_least_squares_OLS_estimates_by_residence_urban_vs_rural_folate_deficiency_and_vitamin_B12_/1238733", "title"=>"Quantile regression and ordinary least squares (OLS) estimates by residence (urban vs rural): folate deficiency and vitamin B12.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2014-11-12 04:19:15"}
  • {"files"=>["https://ndownloader.figshare.com/files/1790841"], "description"=>"<p>The relationship between the vitamin B12 and folate among Chinese women in Shaanxi province.</p>", "links"=>[], "tags"=>["Northwest China ObjectiveTo", "Vitamin B 12 deficiency", "Chinese women", "vitamin B 12", "vitamin B 12 status", "ci", "Quantile regression model", "plasma vitamin B 12", "Folate deficiency"], "article_id"=>1238732, "categories"=>["Biological Sciences"], "users"=>["Shaonong Dang", "Hong Yan", "Lingxia Zeng", "Quanli Wang", "Qiang Li", "Shengbin Xiao", "Xiaojing Fan"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0112586.g003", "stats"=>{"downloads"=>0, "page_views"=>23, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_The_relationship_between_the_vitamin_B12_and_folate_among_Chinese_women_in_Shaanxi_province_/1238732", "title"=>"The relationship between the vitamin B12 and folate among Chinese women in Shaanxi province.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2014-11-12 04:19:15"}
  • {"files"=>["https://ndownloader.figshare.com/files/1790844"], "description"=>"<p><sup>*</sup>Compared with rural women, urban women had higher vitamin B12 (P<0.001) and lower folate (P = 0.029).</p>†<p>The vitamin B12 in south and central Shaanxi was not different statistically (P = 0.379) but higher than that of north Shaanxi (P<0.001). The folate in north and central Shaanxi was not different statistically (P = 0.576) but lower than that of south Shaanxi (P<0.001).</p>‡<p>There were significantly lower vitamin B12 and folate among the women aged 15-19.99 years (P<0.001).</p><p>The median and distribution of vitamin B12 and folate by the residence, geographical environment and age.</p>", "links"=>[], "tags"=>["Northwest China ObjectiveTo", "Vitamin B 12 deficiency", "Chinese women", "vitamin B 12", "vitamin B 12 status", "ci", "Quantile regression model", "plasma vitamin B 12", "Folate deficiency"], "article_id"=>1238735, "categories"=>["Biological Sciences"], "users"=>["Shaonong Dang", "Hong Yan", "Lingxia Zeng", "Quanli Wang", "Qiang Li", "Shengbin Xiao", "Xiaojing Fan"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0112586.t002", "stats"=>{"downloads"=>0, "page_views"=>8, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_The_median_and_distribution_of_vitamin_B12_and_folate_by_the_residence_geographical_environment_and_age_/1238735", "title"=>"The median and distribution of vitamin B12 and folate by the residence, geographical environment and age.", "pos_in_sequence"=>0, "defined_type"=>3, "published_date"=>"2014-11-12 04:19:15"}
  • {"files"=>["https://ndownloader.figshare.com/files/1790845"], "description"=>"<p><sup>*</sup>Quantile regression model and ordinary least squares (OLS) were used for estimates. In the models the dependent variable was vitamin B12 concentration and folate status (deficiency or not) were regarded as the independent variable controlling for potential affecting factors including age, BMI, education level, geographical region, source of family income and morbidity of cold.</p>†<p>The coefficient here meant the change of vitamin B12 of women with folate deficiency compared with those with normal status of folate.</p><p>Estimated coefficients from and multiple liner regression quantile regression for selected quantiles: vitamin B12 and folate status by residence.<sup><a href=\"http://www.plosone.org/article/info:doi/10.1371/journal.pone.0112586#nt105\" target=\"_blank\">*</a></sup></p>", "links"=>[], "tags"=>["Northwest China ObjectiveTo", "Vitamin B 12 deficiency", "Chinese women", "vitamin B 12", "vitamin B 12 status", "ci", "Quantile regression model", "plasma vitamin B 12", "Folate deficiency"], "article_id"=>1238736, "categories"=>["Biological Sciences"], "users"=>["Shaonong Dang", "Hong Yan", "Lingxia Zeng", "Quanli Wang", "Qiang Li", "Shengbin Xiao", "Xiaojing Fan"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0112586.t003", "stats"=>{"downloads"=>5, "page_views"=>14, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Estimated_coefficients_from_and_multiple_liner_regression_quantile_regression_for_selected_quantiles_vitamin_B12_and_folate_status_by_residence_/1238736", "title"=>"Estimated coefficients from and multiple liner regression quantile regression for selected quantiles: vitamin B12 and folate status by residence.<sup>*</sup>", "pos_in_sequence"=>0, "defined_type"=>3, "published_date"=>"2014-11-12 04:19:15"}
  • {"files"=>["https://ndownloader.figshare.com/files/1790843"], "description"=>"<p><sup>*</sup>Few data were missing.</p><p>Characteristics of the female participants in the study.</p>", "links"=>[], "tags"=>["Northwest China ObjectiveTo", "Vitamin B 12 deficiency", "Chinese women", "vitamin B 12", "vitamin B 12 status", "ci", "Quantile regression model", "plasma vitamin B 12", "Folate deficiency"], "article_id"=>1238734, "categories"=>["Biological Sciences"], "users"=>["Shaonong Dang", "Hong Yan", "Lingxia Zeng", "Quanli Wang", "Qiang Li", "Shengbin Xiao", "Xiaojing Fan"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0112586.t001", "stats"=>{"downloads"=>5, "page_views"=>13, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Characteristics_of_the_female_participants_in_the_study_/1238734", "title"=>"Characteristics of the female participants in the study.", "pos_in_sequence"=>0, "defined_type"=>3, "published_date"=>"2014-11-12 04:19:15"}
  • {"files"=>["https://ndownloader.figshare.com/files/1790840"], "description"=>"<p>Prevalence of deficiency in vitamin B12 and folate among Chinese women in Shaanxi province.</p>", "links"=>[], "tags"=>["Northwest China ObjectiveTo", "Vitamin B 12 deficiency", "Chinese women", "vitamin B 12", "vitamin B 12 status", "ci", "Quantile regression model", "plasma vitamin B 12", "Folate deficiency"], "article_id"=>1238731, "categories"=>["Biological Sciences"], "users"=>["Shaonong Dang", "Hong Yan", "Lingxia Zeng", "Quanli Wang", "Qiang Li", "Shengbin Xiao", "Xiaojing Fan"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0112586.g002", "stats"=>{"downloads"=>1, "page_views"=>23, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Prevalence_of_deficiency_in_vitamin_B12_and_folate_among_Chinese_women_in_Shaanxi_province_/1238731", "title"=>"Prevalence of deficiency in vitamin B12 and folate among Chinese women in Shaanxi province.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2014-11-12 04:19:15"}
  • {"files"=>["https://ndownloader.figshare.com/files/1790839"], "description"=>"<p>Distribution of vitamin B12 and folate by age among Chinese women in Shaanxi province.</p>", "links"=>[], "tags"=>["Northwest China ObjectiveTo", "Vitamin B 12 deficiency", "Chinese women", "vitamin B 12", "vitamin B 12 status", "ci", "Quantile regression model", "plasma vitamin B 12", "Folate deficiency"], "article_id"=>1238730, "categories"=>["Biological Sciences"], "users"=>["Shaonong Dang", "Hong Yan", "Lingxia Zeng", "Quanli Wang", "Qiang Li", "Shengbin Xiao", "Xiaojing Fan"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0112586.g001", "stats"=>{"downloads"=>0, "page_views"=>19, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Distribution_of_vitamin_B12_and_folate_by_age_among_Chinese_women_in_Shaanxi_province_/1238730", "title"=>"Distribution of vitamin B12 and folate by age among Chinese women in Shaanxi province.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2014-11-12 04:19:15"}

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Relative Metric

{"start_date"=>"2014-01-01T00:00:00Z", "end_date"=>"2014-12-31T00:00:00Z", "subject_areas"=>[{"subject_area"=>"/Medicine and health sciences/Congenital disorders", "average_usage"=>[267]}, {"subject_area"=>"/Medicine and health sciences/Nutrition", "average_usage"=>[285]}]}
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