 indiv <span class="op">=</span> <span class="st">"id"</span><span class="op">)</span></span></span>
<span class="r-out co"><span class="r-pr">#&gt;</span>            vars    cond: 1     cond: 0 Difference t-stat     cond: 1</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 1             y 0.47 (5.1)    0.32 (5)      0.142  0.326   6.2 (5.5)</span>
<span class="r-out co"><span class="r-pr">#&gt;</span> 2            x1 0.17 (3.1) 0.046 (2.9)      0.125  0.487 0.095 (3.1)</span>
<span class="r-out