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Women’s prepregnancy lipid levels and number of children: a Norwegian prospective population-based cohort study
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  • Published on:
    Women’s prepregnancy lipid levels and number of children: a Norwegian prospective population-based cohort study
    • Cuncun Lu, Medicine master Evidence-Based Medicine Center, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China
    • Other Contributors:
      • Kehu Yang, Professor

    Dear authors,
    Recently, the work “Women’s prepregnancy lipid levels and number of children: a Norwegian prospective population-based cohort study” [1] was published in BMJ Open, it aims to study prepregnancy serum lipid levels and the association with the number of children. First, as part of the BMJ Open audiences, we thank for the work was presented to us. But, we think there are some problems on the tables of this study. When we firstly learn scientific knowledge, and the professor will tell us some rules on table and figure in scientific paper, and one of the most important is that table and figure should be “stand-alone” [2], that is, all important information should be presented, including table, figure, title, legend and footnotes etc. We found, although the “BMI” was given measurement unit as “kilogram/ (height in meters)2” in the text, but we did not find it in all of tables. In order to regulate writing rules, we raised the question.

    Conflicts of interest
    We declare that we have no conflicts of interest.
    Reference
    1. Pirnat A, DeRoo LA, Skjaerven R, et al. Women's prepregnancy lipid levels and number of children: a Norwegian prospective population-based cohort study. BMJ open 2018;8(6): e021188.
    2. Cargill M, O'Connor P. Writing Scientific Research Articles: Strategy and Steps [M] Writing Scientific Research Articles. Wiley John + Sons, 2013:1018.

    Conflict of Interest:
    No.