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Table 1: Patient group according to duration of symptom relief
Group No. Patients (%)
No relief 17 (21%)
<1 Month's relief 19 (23.5%)
1–2 Months' relief 10 (12.3%)
2–6 Months' relief 5 (6.2%)
6–12 Months' relief 15 (18.5%)
>1 Year's relief 15 (18.5%)
Total 81 (100%)

Group	No. Patients (%)
No relief	17 (21%)
<1 Month's relief	19 (23.5%)
1–2 Months' relief	10 (12.3%)
2–6 Months' relief	5 (6.2%)
6–12 Months' relief	15 (18.5%)
>1 Year's relief	15 (18.5%)
Total	81 (100%)