er intends to use as the “official” ID). The other three columns define how the participant is identified in each data collection system.</p>
<table>
<caption><span id="tab:tab5a">Table 4.1: </span> Example Study Key-file</caption>
<thead>
<tr class="header">
<th align="left">ID</th>
<th align="left">Survey_ID</th>
<th align="left">EMA_ID</th>
<th align="left">Actigraphy_ID</th>
</tr>
</thead>
<tbody>
<tr class="odd">
<td align="left">P001</td>
<td align="left">QM01221</td>
<td align="left">192.A102.83A