Table 6. Estimates Of Hypertension From Population-Based Studies In Sub-Saharan Africa.

Author (year)	Place of study	Sample size	Age range (years)	Prevalence (definition 1) (%)	Prevalence (definition 2) (%)
Present study	Nigeria, nationwide	13 504	40+	45.9*	24.3*
Isezuo et al.18 (2011)	Nigeria (rural and urban)	782	15–65	24.5	Nigeria (rural)
Oladapo et al.19 (2010)	Nigeria (rural)	2 000	18–64	20.8
Adedoyin et al.20 (2008)	Nigeria (semi-urban)	2 097	20+	36.6*
Omuemu et al.21 (2007)	Nigeria (rural)	590	15+	20.2*
Olatunbosun et al.29 (2000)	Nigeria, (urban)	998	16–70		10.4
Cooper et al.13 (1997)	Nigeria (rural and urban)	1 171	25+		14.5*
Andy et al.15 (2012)	Nigeria (rural)	3 869	15+	23.6
Ogah et al.18 (2013)	Nigeria (rural)	2 999	18+	31.8
Ekpenyong et al.38 (2010)	Nigeria (rural)	2 780	18-60	25
Maher et al.25 (2011)	Uganda (rural)	6 678	All	22.5*
De Ramirez et al.12 (2010)	Malawi, Rwanda, Tanzania (rural)	1 485	18+	22
Mathenge et al.6 (2010)	Kenya (rural and urban)	4 396	50+	50.1
Damasceno et al.23 (2009)	Mozambique (rural and urban)	3 323	25–64	33.1
Tesfaye et al.26 (2009)	Ethiopia (urban)	3 173	25–64	31
Addo et al.27 (2008)	Ghana (urban)	1 015	25+	30.3
Kengne et al.28 (2007)	Cameroon (urban)	2 559	15+	20.8
Steyn et al.24 (2001)	South Africa, nationwide	13 802	15+	23.9
Van der Sande22 (2000)	Gambia	5 369	15+	19
Dewhurst et al.39 (2011)	Tanzania (rural Hai)	2 223	70+	69.9
Houinato et al.40 (2008)	Benin		6 853	25–64	27.9
Hendriks et al.41 (2009–11)	Nigeria, Kenya (rural), Tanzania, Namibia (urban)	7 568		18+	Nigeria: 19.3
				Kenya: 21.4
				Tanzania: 23.7
				Namibia: 38

*Medication details not available

Definition 1: Diastolic BP 140 mmHg ≥ or SBP ≥ 90 mmHg

Definition 2: Diastolic BP 160 mmHg ≥ or SBP ≥ 95 mmHg