Table 6. Outcomes of different screening scenarios for patients without a diagnosis of hypertension.

Scenario		Number of BP measures used in screening	Number of new cases of hypertension detected	Percentage reduction BP measurements compared to scenario 1	Percentage reduction of new diagnoses of hypertension compared to scenario 1
1	Screened at every visit & newly raised blood pressure noted	27,356	418*	____	____
2	Screened all ages once a year	5,456	418	80.1%	0%
3	Patients aged 30 years and over screened once a year	4414	402	83.9% (Or 19.1% of scenario 2)	3.8%
4	Patients aged 35 years and over screened once a year	3484	371	87.3% (Or 21.1% of scenario 2)	11.2%

*we have no data on how many patients with a raised blood pressure are followed up in clinics without a LHW, but our observations suggest that it is very few.