RESUMO
BACKGROUND: The impact factor (IF) is a common citation metric used for evaluating and comparing scientific journals within a certain field. Previous studies have shown that IFs are increasing. However, rates may depend on journal publication language. The aim of this study was to determine IF values and trends for general medical journals, comparing non-English-language with English-language journals. METHODS: For all journals categorised as "medicine, general and internal" (n = 150) in the Journal Citation Reports (JCR), publication language, country of origin and IFs for the last 10 years were recorded (2001-2010). Data were classified, analysed descriptively and compared using non-parametric tests. RESULTS: From 2001 to 2010, IFs increased for English-language and non-English-language journals (p <0.001). During the 10-year study period, IFs were higher for English-language than for non-English-language journals (p <0.001). The proportion of non-English-language journals included in the JCR was 12.2% in 2001 and 18.0% in 2010 (p = 0.28). INTERPRETATION: From 2001 to 2010, IFs increased significantly for English-language and non-English-language journals. When comparing IF values year-by-year (2001-2010), IFs were significantly higher for English-language than for non-English-language journals. In an international scientific community with English as the universal language of science, non-English-language journals should consider changing publication language, and adopt either a bi- or a monolingual approach. Publishing in English will increase citation counts and thus IFs, but, more importantly, scientific findings will be accessible to a much wider audience.
Assuntos
Fator de Impacto de Revistas , Jornalismo Médico , Idioma , Editoração/tendências , Humanos , Disseminação de Informação , Estatística como AssuntoRESUMO
In a randomized study of 300 infants, the effect of 1 mg of peroral vitamin K given at birth was compared to the same dose given as an intramuscular injection. The combined activity of coagulation factor II + VII + X taken after 48 and before 72 hours after delivery served as the primary endpoint. Prothrombin (antigen) and PIVKA II (acarboxyprothrombin) were also measured. All infants were observed for events of bleeding until discharge from the hospital, normally on the fifth day. No significant differences between the groups in any of the biochemical markers were observed. The 95% confidence limits of the differences were very narrow for all factors. No cases of bleeding were observed. We conclude that administration of 1 mg peroral vitamin K is as efficient as intramuscular administration of the same dose in the prevention of classical hemorrhagic disease of the newborn.
Assuntos
Biomarcadores , Precursores de Proteínas , Sangramento por Deficiência de Vitamina K/prevenção & controle , Vitamina K/administração & dosagem , Administração Oral , Fator VII/análise , Fator X/análise , Humanos , Recém-Nascido , Injeções Intramusculares , Protrombina/análogos & derivados , Protrombina/análise , Distribuição AleatóriaRESUMO
Random blood glucose was measured on 1,992 pregnant women during the initial attendance at our antenatal clinic. The visit usually took place during the first part of the second trimester. Women with a random blood glucose concentration in excess of 6.1 mmol/l within 2 hours of the last meal and 5.6 mmol/l more than 2 hours after the last meal were referred for a fasting blood glucose measurement. A 75 g oral glucose tolerance test was performed in those cases where the fasting blood glucose exceeded 4.0 mmol/l. The cut-off levels were exceeded in 22 cases, but only one of these women was found to be suffering from previously unsuspected diabetes mellitus, based on the criteria of WHO (1). Five other cases of gestational diabetes were not detected by the random blood glucose method. It is concluded that random blood glucose measurements cannot be recommended as a safe and reliable screening procedure during the early part of the second trimester.
