protected function filter_review_summary_table($summarydata, $page) {
        if ($page == 0) {
            return $summarydata;
        }

        // Only show some of summary table on subsequent pages.
        foreach ($summarydata as $key => $rowdata) {
            if (!in_array($key, array('user', 'attemptlist'))) {
                unset($summarydata[$key]);
            }
        }

        return $summarydata;
    }