an class="r-pr">#&gt;</span>     INCGHH_A INCGHH_B</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 395    NA(c)        3</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 396    NA(c)        5</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 397    NA(c)    NA(b)</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 398    NA(c)        2</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 399    NA(c)        1</span>
<span class="r-out co"><span class