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      Validade do autorrelato de anemia e do uso terapêutico de sais de ferro durante a gestação: coorte de nascimentos de 2015 de Pelotas, Rio Grande do Sul, Brasil Translated title: Validez del autoinforme de anemia y uso terapéutico de sales de hierro durante la gestación: cohorte de nacimientos de 2015 en Pelotas, Río Grande do Sul, Brasil Translated title: Validity of patient-reported anemia and therapeutic use of iron supplements during pregnancy: 2015 Pelotas (Brazil) birth cohort

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          Abstract

          O objetivo deste estudo é investigar a validade do autorrelato de anemia e de uso terapêutico de sais de ferro, frente à informação de hemoglobina da carteira da gestante. O estudo utiliza dados da coorte de nascimentos de 2015 de Pelotas, Rio Grande do Sul, Brasil. Para a validação do autorrelato de anemia, foram incluídas todas as mães que tinham registro de hemoglobina na carteira da gestante (N = 3.419), ao passo que, para a validação do autorrelato de uso terapêutico de sais de ferro, foram incluídas as que tinham registro de exames de hemoglobina na carteira da gestante e que relataram haver utilizado algum medicamento com sulfato ferroso em sua composição durante a gestação. Anemia foi definida como, pelo menos, um registro de hemoglobina ≤ 11g/dL na carteira da gestante (padrão-ouro). A prevalência de anemia conforme padrão-ouro foi 35,9% (34,3-37,5), ao passo que a de anemia autorrelatada foi 42,2% (40,8-43,7), e o autorrelato de uso terapêutico de sais de ferro, 43,2% (41,3-45,1). A sensibilidade do autorrelato de anemia foi 75,2% (72,8-77,6) e a especificidade, 75,1% (73,3-76,9). Para o autorrelato de uso terapêutico de sais de ferro, a sensibilidade foi 66,4% (63,5-69,2) e a especificidade, 71,9% (69,7-74,0). A especificidade do autorrelato de anemia e do autorrelato de uso terapêutico de sais de ferro entre mães com ≥ 12 anos de escolaridade foi 78,4% (75,4-81,4) e 79,5% (76,1-82,9). Na população estudada, com alta prevalência de anemia, de cada cinco puérperas que relataram anemia ou uso terapêutico de sais de ferro, três relatavam a verdade. A especificidade de ambos os autorrelatos foi mais elevada entre mães com ≥ 12 anos de escolaridade.

          Translated abstract

          El objetivo de este estudio es investigar la validez del autoinforme de anemia y uso terapéutico de sales de hierro, respecto a la información sobre la hemoglobina, presente la cartilla de la embarazada. El estudio utiliza datos de la cohorte de nacimientos en Pelotas, Rio Grande ddo Sul, Brasil, 2015. Para la validación del autoinforme de anemia, se incluyeron a todas las madres que tenían un registro de hemoglobina en la cartilla de la embarazada (N = 3.419), al mismo tiempo que, para la validación del autoinforme del uso terapéutico de sales de hierro, se incluyeron a quienes tenían registro de exámenes de hemoglobina en la cartilla de la embarazada, y que informaron haber utilizado algún medicamento con sulfato ferroso en su composición durante la gestación. La anemia se definió como, por lo menos, un registro de hemoglobina ≤ 11g/dL en la cartilla de la embarazada (patrón ideal). La prevalencia de anemia, según el patrón ideal, fue de un 35,9% (34,3-37,5), mientras que la de la anemia autoinformada fue de un 42,2% (40,8-43,7), y el autoinforme de uso terapéutico de sales de hierro, 43,2% (41,3-45,1). La sensibilidad del autoinforme de anemia fue de un 75,2% (72,8-77,6) y la especificidad, 75,1% (73,3-76,9). Para el autoinforme de uso terapéutico de sales de hierro, la sensibilidad fue 66,4% (63,5-69,2) y la especificidad, 71,9% (69,7-74,0). La especificidad del autoinforme de anemia y del autoinforme de uso terapéutico de sales de hierro entre madres con ≥ 12 años de escolaridad fue 78,4% (75,4-81,4) y 79,5% (76,1-82,9). En la población estudiada, con una alta prevalencia de anemia, de cada cinco puérperas que informaron anemia o uso terapéutico de sales de hierro, tres relataban la verdad. La especificidad de ambos autoinformes fue más elevada entre madres con ≥ 12 años de escolaridad.

          Translated abstract

          This study aimed to investigate the validity of patient-reported anemia and therapeutic use of iron supplements, compared to hemoglobin values recorded on the patient’s prenatal card. The study used data from the 2015 Pelotas (Brazil) birth cohort. For validation of self-reported anemia, we included all mothers with hemoglobin values recorded on their prenatal card (N = 3,419), while validation of self-reported therapeutic use of iron supplements included those who had hemoglobin values recorded on their prenatal care and who reported having used medicines containing ferrous sulfate during pregnancy. Anemia was defined as at least one record of hemoglobin ≤ 11g/dL on the prenatal card (gold standard). Prevalence of anemia according to the gold standard was 35.9% (34.3-37.5), while patient-reported anemia was 42.2% (40.8-43.7), and patient-reported therapeutic use of iron supplements was 43.2% (41.3-45.1). Sensitivity of patient-reported anemia was 75.2% (72.8-77.6) and specificity was 75.1% (73.3-76.9). For patient-reported therapeutic use of iron supplements, sensitivity was 66.4% (63.5-69.2) and specificity was 71.9% (69.7-74.0). Specificity of patient-reported anemia and patient-reported therapeutic use of iron supplements in mothers with ≥ 12 years of schooling was 78.4% (75.4-81.4) and 79.5% (76.1-82.9), respectively. In the study population, for every five postpartum women that reported anemia or therapeutic use of iron supplements, three were telling the truth. The specificity of both self-reports was high in mothers with ≥ 12 years of schooling.

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          A descriptive review of the methodologies used in household surveys on medicine utilization

          Background Studies carried out in the community enable researchers to understand access to medicines, affordability, and barriers to use from the consumer's point of view, and may stimulate the development of adequate medicines policies. The aim of the present article was to describe methodological and analytical aspects of quantitative studies on medicine utilization carried out at the household level. Methods Systematic review of original papers with data collected in studies in which the household was a sampling unit, published between 1995 and 2008. The electronic review was carried out in Medline/Pubmed, Scielo and Lilacs. The reference lists of the papers identified were examined, as well as other publications by their authors. Studies on the utilization of specific pharmacological groups, or those including only respondents with a given disease were excluded. Results Out of 4852 papers initially identified in the literature search, 61 fulfilled our inclusion criteria. Most studies were carried out in Europe and North America and used a cross-sectional approach. More than 80% used face-to-face interviews for data collection, and the most frequently used recall period for assessing medicine utilization was 14–15 days. In 59% of the studies, interviewers were trained to request the packaging of the medicines reported by the subjects; medical prescriptions were requested less frequently (15% of the studies). Conclusion These data will be useful for updating researchers on what methods their peers are currently using. Such information may help overcome challenges in the planning and analyses of future studies. Moreover, this publication may contribute to the improvement of the quality of medicine use data obtained in household surveys.
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            Mothers and their pregnancies: a comparison of three population-based cohorts in Southern Brazil

            Mothers from the 1982, 1993 and 2004 Pelotas birth cohorts were compared across biological, socioeconomic, demographic and reproductive characteristics. Women in the 2004 cohort had higher levels of education, gained more weight during pregnancy, and were heavier at the beginning and end of their pregnancy than mothers who gave birth in 1993 and 1982. There was an important increase in obesity rates (body mass index > 30kg/m²) over the 22 years of the study. Mean parity decreased from 1.3 in 1982 to 1.1 in 2004, with a growing proportion of primiparas and a decline in the proportion of women with > 4 children. The mean birth interval increased from 33.5 months in 1982 to 65.7 in 2004. Smoking during pregnancy decreased from 35.6% in 1982 to 25.1% in 2004. As with other characteristics, the change in smoking status differed according to income, with higher reductions among the wealthiest (from 24.9% to 8.7%) than among the poorest mothers (from 43.7% to 33.6%). In general terms, between 1993 and 2004 there was a decrease in the prevalence of maternal risk factors for unfavorable perinatal outcomes.
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              Validade do auto-relato de diabete mellitus gestacional no pós-parto imediato

              Pesquisas com base no auto-relato de fatores de risco ou morbidade são úteis em saúde pública, principalmente pelo baixo custo e facilidade de coleta, no entanto a acurácia dos dados coletados é importante para a validade interna da investigação. O objetivo deste estudo foi avaliar a concordância entre o auto-relato de diabete mellitus gestacional e registros do cartão da gestante (padrão-ouro). A concordância foi medida por meio da sensibilidade, especificidade, acurácia, estatística kappa e intervalos de 95% de confiança (IC95%). De julho a dezembro de 2007, todas as mulheres que tiveram filhos em três maternidades de Pelotas, Rio Grande do Sul, Brasil, foram visitadas no pós-parto imediato. Entrevistaram-se 1.047 mulheres, das quais 872 portavam a carteira de gestante; destas, 869 possuíam registro de glicemia. A média de idade foi 26,7 anos. A prevalência de diabetes mellitus gestacional conforme padrão-ouro foi 4,3% (IC95%: 3,0-5,8) e auto-referida, 4% (IC95%: 2,8-5,5). A sensibilidade do auto-relato de diabetes mellitus gestacional foi 72,9% (IC95%: 55,9-86,2); especificidade, 99% (IC95%: 98,1-99,6); acurácia, 97,9% (IC95%: 96,7-98,7); kappa, 74%. Para esta população, auto-relato de diabetes mellitus gestacional é uma informação válida e pode ser usada em estudos de base populacional.
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                Author and article information

                Journal
                csp
                Cadernos de Saúde Pública
                Cad. Saúde Pública
                Escola Nacional de Saúde Pública Sergio Arouca, Fundação Oswaldo Cruz (Rio de Janeiro, RJ, Brazil )
                0102-311X
                1678-4464
                2018
                : 34
                : 6
                : e00125517
                Affiliations
                [1] Pelotas Rio Grande do Sul orgnameUniversidade Federal de Pelotas Brazil
                [2] Porto Alegre Rio Grande do Sul orgnameUniversidade Federal do Rio Grande do Sul Brazil
                Article
                S0102-311X2018000605015 S0102-311X(18)03400605015
                10.1590/0102-311x00125517
                30184019
                7aebc776-6285-4593-99d3-0c69048ceeaf

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : 26 December 2017
                : 23 July 2017
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 17, Pages: 0
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                SciELO Public Health

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                Farmacoepidemiología,Sais de Ferro,Servicios de Salud,Iron Salts,Farmacoepidemiologia,Serviços de Saúde,Estudos de Validação,Anemia,Sales de Hierro,Helath Services,Validations Studies,Pharmacoepidemiology,Estudios de Validación

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