Table 1 Search strategy used in different databases

1. exp Hypertension/

2. high blood pressure.mp.

3. exp Blood Pressure/

4. hyperten*.mp

5. 1 or 2 or 3 or 4

6. exp Prevalence/

7. exp Bangladesh/

8. 5 and 6 and 7

((Bangladesh) AND Prevalence) AND ((((Hypertension) OR High blood pressure) OR Blood pressure) OR Hyperten*)

1. exp hypertension/

2. high blood pressure.mp.

3. exp blood pressure/

4. hyperten*.mp.

5. 1 or 2 or 3 or 4

6. exp prevalence/

7. exp Bangladesh/

8. 5 and 6 and 7