Table 5.

Participants who have a history of hypertension and actually have taken antihypertensive drugs

		Normal or well controlled BP (<140/90)	High BP (≥140/90)	Total
History of hypertension (divided into those with adequate treatment with good BP controlled (<140/90) and inadequate treatment with poor BP controlled (BP>140/90)	Yes	193 (25.6% of those on antihypertensive drugs & having well controlled BP) 529 (44.2%)	560 (74.4% of those on antihypertensive drugs but having poor controlled BP)	753 (100%)
	No		669 (55.8% of those without a history of hypertension but having high BP)	1198 (100%)
	Total	722 (37%)	1229 (63%)	1951 (100%)

Chi Square p<0.001.

df = 1(68.075).

Thai elders who have untreated hypertension or have inadequate treatment of hypertension (HT) are 63% [(560+669)/1951=62.99%].