How to control knitr kable scientific notation? : <p>I have a data frame like this:</p>

<pre><code>&gt; summary
  variable         value
1     var1  5.810390e-06
2     var2  5.018182e-06
3     var3  5.414286e-06
4     var4  3.000779e+02
5     var5 -2.105123e+01
6     var6  8.224229e-01
</code></pre>

<p>I want to print it in a word document using knitr/kable. Thus I used the following function:</p>

<pre><code>knitr::kable(summary,
             row.names = FALSE,
             col.names = c("Variable", "Mean"))
</code></pre>

<p>But the result is not satisfying:</p>

<p><a href="https://i.stack.imgur.com/3YxQs.png" rel="noreferrer"><img src="https://i.stack.imgur.com/3YxQs.png" alt="enter image description here"></a></p>

<p>I'm OK with variables 4 to 6, but variables 1 to 3 are really not easy to read this way... Is there a way to control this format?</p>
