 because <code>pander</code> tries to return a <code>knit_asis</code> class object when run inside <code>knitr</code>, but for loops/vectorized functions this results in incorrect output. The recommended way to solve this is to disable this behavior by setting <code>knitr.auto.asis</code> to <code>FALSE</code> using <code>panderOptions</code>. However, we also need to tell <code>knitr</code> to convert the table on the fly by specifying <code>results=&#39;asis&#39;</code> in the chunk options:</p>
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