A cross-sectional population-based survey employing a cluster sampling
method and household visits by trained health teams investigated hype
rtension prevalence in the Kingdom among 13,700 individuals of both se
xes in all age groups. The World Health Organization (WHO) definition
of hypertension of integral 160/95 mmHg was used; it was found that 9.
1% and 8.7% of the total sample investigated were systolic and diastol
ic hypertensives, respectively. However, 12.4% and 7.9% of children yo
unger than 18 years were systolic and diastolic hypertensive. Among ad
ults aged 18 years and above, 5.3% were systolic and 7.3% were diastol
ic hypertensives; 87.5% of systolic and 79.4% of diastolic hypertensiv
es were aged 40 years and over. Females had statistically significant
elevated systolic hypertension compared with males (P < 0.01). However
, if blood pressure integral 140/90 mmHg is used as a criterion for hy
pertension definition, the prevalence among the latter age groups woul
d be 20.4% for systolic and 25.9% for diastolic hypertension. The prev
alence of Isolated Systolic Hypertension (ISH), Isolated Diastolic Hyp
ertension (IDH) and Systolic Diostolic Hypertension (SDH among adults
above 18 years was 1.8%, 3.8% and 3.5% respectively. ISH was higher am
ong females compared with males (2% vs 1.4%), while IDH was higher amo
ng males than females (4.4% vs 3.4%). There is a need for tracking chi
ldhood hypertension, which could provide long-term analysis for risk o
f adult hypertension.