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To the Editor Dr Armstrong1 wrote a commentary in JAMA about our study published in the Archives of Dermatology on tumor necrosis factor (TNF) inhibitors and myocardial infarction (MI) in patients with psoriasis.2 She noted that age was treated as a dichotomous variable and suggested exploring it as a continuous variable. We did run age as a continuous variable, but it did not change the findings so we chose not to include this in our article.2 Furthermore, there were no interactions among the variables.
Wu JJ. Tumor Necrosis Factor Inhibitors and Myocardial Infarction in Psoriasis. JAMA. 2013;310(10):1075-1076. doi:10.1001/jama.2013.276749