Meta-analysis in metafor package with within-subjects standard error?











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I am conducting a meta-analysis with metafor in R. For the majority of articles, I managed to extract means and standard deviations, which I need for the escalc function to calculate an effect size.



However, many of the articles only provide means and within-subject standard error.



My questions:
1. is there a way to calculate standard deviation or standard error of the mean from the within subject standard error?
2. is there a way to calculate an effect size from only means and within subject standard error in metafor?



thanks!






standard-deviation standard-error metafor







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    up vote
    0
    down vote

    favorite












    I am conducting a meta-analysis with metafor in R. For the majority of articles, I managed to extract means and standard deviations, which I need for the escalc function to calculate an effect size.



    However, many of the articles only provide means and within-subject standard error.



    My questions:
    1. is there a way to calculate standard deviation or standard error of the mean from the within subject standard error?
    2. is there a way to calculate an effect size from only means and within subject standard error in metafor?



    thanks!






    standard-deviation standard-error metafor







    share|improve this question
























      up vote
      0
      down vote

      favorite









      up vote
      0
      down vote

      favorite











      I am conducting a meta-analysis with metafor in R. For the majority of articles, I managed to extract means and standard deviations, which I need for the escalc function to calculate an effect size.



      However, many of the articles only provide means and within-subject standard error.



      My questions:
      1. is there a way to calculate standard deviation or standard error of the mean from the within subject standard error?
      2. is there a way to calculate an effect size from only means and within subject standard error in metafor?



      thanks!






      standard-deviation standard-error metafor







      share|improve this question













      I am conducting a meta-analysis with metafor in R. For the majority of articles, I managed to extract means and standard deviations, which I need for the escalc function to calculate an effect size.



      However, many of the articles only provide means and within-subject standard error.



      My questions:
      1. is there a way to calculate standard deviation or standard error of the mean from the within subject standard error?
      2. is there a way to calculate an effect size from only means and within subject standard error in metafor?



      thanks!






      standard-deviation standard-error metafor




      standard-deviation standard-error metafor






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Nov 14 at 14:30









      DRusz

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