$ nearc4  : int  0 0 0 1 1 1 1 1 1 1 ...</span>
<span class="r-out co"><span class="r-pr">#&gt;</span>  $ educ    : int  7 12 12 11 12 12 18 14 12 12 ...</span>
<span class="r-out co"><span class="r-pr">#&gt;</span>  $ age     : int  29 27 34 27 34 26 33 29 28 29 ...</span>
<span class="r-out co"><span class="r-pr">#&gt;</span>  $ fatheduc: int  NA 8 14 11 8 9 14 14 12 12 ...</span>
<span class="r-out co"><span class="r-pr">#&gt;</span>  $ motheduc: int  NA 8 12 12 7 12 14 14 12 12 ...</span>
<span class="r