private function printSet($cohortid, $cohortname)
    {
        $stats = Attendance_Record_Set::getStatsForPeriod($this->_start_date, $this->_end_date, $cohortid);
        if (empty($stats) || $stats[NULL]['rate'] == 0) {
            return FALSE;
        }
        ?>
		<div class="span4">
		<table class="table table-bordered attendance-stats">
			<thead>
				<tr>
					<th colspan="4"><?php 
        echo ents($cohortname);
        ?>
</th>
				</tr>
				<tr>
					<th><?php 
        echo _('Segment');
        ?>
</th>
					<th title=<?php 
        echo _('"Percentage of dates marked present rather than absent"');
        ?>
><?php 
        echo _('Rate');
        ?>
</th>
					<th class="present" title=<?php 
        echo _('"Average number marked present per date"');
        ?>
><?php 
        echo _('Avg&nbsp;P');
        ?>
</th>
					<th class="absent" title="<?php 
        echo _('Average number marked absent per date"');
        ?>
><?php 
        echo _('Avg&nbsp;A');
        ?>
</th>
			</thead>
			<tbody>
		<?php 
        $map['age_bracket'] = explode(',', AGE_BRACKET_OPTIONS);
        if ($cohortid[0] == 'g') {
            list($map['status'], $default) = Person_Group::getMembershipStatusOptionsAndDefault();
        } else {
            $map['status'] = $this->status_map;
        }
        foreach (array('status', 'age_bracket') as $grouping) {
            foreach ($map[$grouping] as $k => $v) {
                if (!isset($stats[$grouping][$k])) {
                    continue;
                }
                ?>
				<tr <?php 
                if ($k == 0 && $grouping == 'age_bracket') {
                    echo 'class="thick-top-border"';
                }
                ?>
>
					<th><?php 
                echo ents($v);
                ?>
</th>
				<?php 
                if (isset($stats[$grouping][$k])) {
                    ?>
					<td><?php 
                    echo $stats[$grouping][$k]['rate'];
                    ?>
%</td>
					<td><?php 
                    echo number_format($stats[$grouping][$k]['avg_present'], 1);
                    ?>
</td>
					<td><?php 
                    echo number_format($stats[$grouping][$k]['avg_absent'], 1);
                    ?>
</td>
					<?php 
                } else {
                    ?>
					<td>-</td>
					<td>-</td>
					<td>-</td>
					<?php 
                }
                ?>
				</tr>
				<?php 
            }
        }
        ?>
				<tr class="thick-top-border">
					<th><?php 
        echo _('Overall');
        ?>
</th>
					<td><?php 
        echo $stats[NULL]['rate'];
        ?>
%</td>
					<td><?php 
        echo number_format($stats[NULL]['avg_present'], 1);
        ?>
</td>
					<td><?php 
        echo number_format($stats[NULL]['avg_absent'], 1);
        ?>
</td>
				</tr>
				<tr class="headcount">
					<th colspan="2">
						<?php 
        echo _('Avg&nbsp;Headcount');
        ?>
					</th>
					<td class="right">
						<?php 
        $bits = explode('-', $cohortid);
        $hc = Headcount::fetchAverage($bits[0], $bits[1], $this->_start_date, $this->_end_date);
        if ($hc) {
            echo number_format($hc, 1);
        } else {
            echo 'N/A';
        }
        ?>
					</td>
					<td colspan="2"></td>
				</tr>
			</tbody>
		</table>
		</div>
		<?php 
        return TRUE;
    }
    private function printSet($cohortid, $cohortname)
    {
        $stats = Attendance_Record_Set::getStatsForPeriod($this->_start_date, $this->_end_date, $cohortid);
        if (empty($stats)) {
            return FALSE;
        }
        ?>
		<div class="span4">
		<table class="table table-bordered attendance-stats">
			<thead>
				<tr>
					<th colspan="4"><?php 
        echo ents($cohortname);
        ?>
</th>
				</tr>
				<tr>
					<th>Status</th>
					<th title="Percentage of dates marked present rather than absent">Rate</th>
					<th class="present" title="Average number marked present per date">Avg&nbsp;P</th>
					<th class="absent" title="Average number marked absent per date">Avg&nbsp;A</th>
			</thead>
			<tbody>
		<?php 
        if ($cohortid[0] == 'g') {
            list($map, $default) = Person_Group::getMembershipStatusOptionsAndDefault();
        } else {
            $map = $this->status_map;
        }
        foreach ($map as $k => $v) {
            if (isset($stats[$k])) {
                ?>
				<tr>
					<th><?php 
                echo ents($v);
                ?>
</th>
					<td style="width: 6ex; text-align: right"><?php 
                echo $stats[$k]['rate'];
                ?>
%</td>
					<td style="width: 6ex; text-align: right"><?php 
                echo number_format($stats[$k]['avg_present'], 1);
                ?>
</td>
					<td style="width: 6ex; text-align: right"><?php 
                echo number_format($stats[$k]['avg_absent'], 1);
                ?>
</td>
				</tr>
				<?php 
            }
        }
        ?>
				<tr class="thick-top-border">
					<th>Overall</th>
					<td style="width: 6ex; text-align: right"><?php 
        echo $stats[NULL]['rate'];
        ?>
%</td>
					<td style="width: 6ex; text-align: right"><?php 
        echo number_format($stats[NULL]['avg_present'], 1);
        ?>
</td>
					<td style="width: 6ex; text-align: right"><?php 
        echo number_format($stats[NULL]['avg_absent'], 1);
        ?>
</td>
				</tr>
				<tr class="headcount">
					<th colspan="2">
						Avg&nbsp;Headcount
					</th>
					<td class="right">
						<?php 
        $bits = explode('-', $cohortid);
        $hc = Headcount::fetchAverage($bits[0], $bits[1], $this->_start_date, $this->_end_date);
        if ($hc) {
            echo number_format($hc, 1);
        } else {
            echo 'N/A';
        }
        ?>
					</td>
					<td colspan="2"></td>
				</tr>
			</tbody>
		</table>
		</div>
		<?php 
        return TRUE;
    }