diff --git a/app/Controllers/Home.php b/app/Controllers/Home.php
index 6bee846..94fab9d 100644
--- a/app/Controllers/Home.php
+++ b/app/Controllers/Home.php
@@ -285,20 +285,13 @@ class Home extends BaseController
             ->from('opd_master o', true)
             ->groupBy('label')->orderBy('total', 'DESC')->get()->getResultArray();
 
-        $referralRows = $this->db->query(
-            "SELECT COALESCE(NULLIF(CONCAT_WS(' ', NULLIF(r.title, ''), NULLIF(r.f_name, '')), ''), NULLIF(x.refer_name, ''), 'Not recorded') label,
-                    COUNT(o.opd_id) total, COUNT(DISTINCT o.p_id) patients
-             FROM opd_master o
-             LEFT JOIN (
-                 SELECT opd_code, MAX(NULLIF(refer_by_id, 0)) refer_id,
-                        MAX(NULLIF(NULLIF(refer_by_other, ''), '0')) refer_name
-                 FROM invoice_master GROUP BY opd_code
-             ) x ON x.opd_code = o.opd_code
-             LEFT JOIN refer_master r ON r.id = x.refer_id
-             WHERE o.apointment_date >= ? AND o.apointment_date < ?
-             GROUP BY label ORDER BY total DESC",
-            [$fromDateTime, $toExclusive]
-        )->getResultArray();
+        $referralRows = $this->db->table('opd_master o')
+            ->select("COALESCE(NULLIF(TRIM(p.referby), ''), 'Not recorded') label", false)
+            ->select('COUNT(o.opd_id) total, COUNT(DISTINCT o.p_id) patients', false)
+            ->join('patient_master p', 'p.id = o.p_id', 'left')
+            ->where('o.apointment_date >=', $fromDateTime)
+            ->where('o.apointment_date <', $toExclusive)
+            ->groupBy('label')->orderBy('total', 'DESC')->get()->getResultArray();
 
         return view('dashboard/opd', compact('fromDate', 'toDate', 'totals', 'doctorRows', 'departmentRows', 'organizationRows', 'referralRows'));
     }
diff --git a/app/Views/dashboard/opd.php b/app/Views/dashboard/opd.php
index 7e3f6dd..34d1497 100644
--- a/app/Views/dashboard/opd.php
+++ b/app/Views/dashboard/opd.php
@@ -34,7 +34,7 @@ $maxDoctor = max(array_merge([1], array_map(static fn (array $row): int => (int)
                 <div class="dashboard-bars"><?php foreach ($doctorRows as $row) : ?><div class="dashboard-bar-row"><div class="d-flex justify-content-between gap-3"><span><?= esc($row['label']) ?></span><strong><?= (int) $row['total'] ?></strong></div><div class="progress"><div class="progress-bar" style="width:<?= round(((int) $row['total'] / $maxDoctor) * 100, 1) ?>%"></div></div><div class="small text-muted"><?= (int) $row['patients'] ?> unique patient<?= (int) $row['patients'] === 1 ? '' : 's' ?></div></div><?php endforeach ?></div>
             <?php endif ?></div></div></div>
         <div class="col-xl-5"><div class="card h-100"><div class="card-body"><h5 class="card-title">Department distribution</h5><?= view('dashboard/partials/ranked_table', ['rows' => $departmentRows, 'labelHeading' => 'Department', 'showPatients' => true]) ?></div></div></div>
-        <div class="col-xl-6"><div class="card h-100"><div class="card-body"><h5 class="card-title">Referral source</h5><div class="text-muted small mb-2">Unique patients and visits, derived from the billing referral recorded against each OPD code.</div><?= view('dashboard/partials/ranked_table', ['rows' => $referralRows, 'labelHeading' => 'Referral', 'showPatients' => true]) ?></div></div></div>
+        <div class="col-xl-6"><div class="card h-100"><div class="card-body"><h5 class="card-title">Referral source</h5><div class="text-muted small mb-2">Unique patients and visits, derived from the referral recorded in each patient profile.</div><?= view('dashboard/partials/ranked_table', ['rows' => $referralRows, 'labelHeading' => 'Referral', 'showPatients' => true]) ?></div></div></div>
         <div class="col-xl-6"><div class="card h-100"><div class="card-body"><h5 class="card-title">Patient category</h5><?= view('dashboard/partials/ranked_table', ['rows' => $organizationRows, 'labelHeading' => 'Category', 'showPatients' => false]) ?></div></div></div>
     </div>
 </section>