Recent content by dappa

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    Interaction of treatment with confounder

    It is an assignment, so it is not something that will end up in a journal. Nevertheless, I thought it was important for me to understand what the data was telling me. So thank you very much for your helpful responses, it really helped me a lot. I now have a much better understanding of what it...
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    Interaction of treatment with confounder

    Thank you for your advice! I have now re-leveled the gender variable to see if the treatment effect is significant for the female group (by making them the baseline). In fact, I then find that for females getting the treatment is associated with a significant difference in outcomes and the...
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    Interaction of treatment with confounder

    I didn't expect heterogeneous treatment effects but I included gender to control for the unequal number of females and males in one group compared to the other as you would usually do this when controlling for a variable which you could not randomize before. And we could not randomize as this is...
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    Interaction of treatment with confounder

    Thank you for your reply and advice! You're right, there are almost no male in the first condition. There are two, I do not know why there is not red dot. It is 2 male and 25 female in the first condition and 9 male and 19 female in the second
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    Interaction of treatment with confounder

    In a multivariate regression analysis, I examine the effect that a treatment method has on subjects' hemoglobin levels. Since this is a retrospective study, I could not control for gender (or age) by randomization prior to collection. As a result, I control for gender in my analyses. The...