Table 1.

Characteristics of Reviewed Studies

Study, Year of Publication	Country	Disease Condition	Sample Size	Mean Age (Years)	Male (%)	Female (%)	Data Collection	Method & Sampling
Abate et al, 201929	Ethiopia	HTN	278	54.40	47.80	52.20	Y	Cross sectional, SRS
Aboutorabi Zarchi et al, 201930	Iran	DM	281	54.04	29.60	70.40	O, MCQ	Cross-sectional
Al-Beladi et al, 201631	Saudi Arabia	DM & HTN	166	-	42.20	57.80	O&C	Cross-sectional, Consecutive Sampling
Amen, 201632	Iraq	HTN	114	58.40	58.8	45.70	C	Cross-sectional Purposive sampling
Ampiah et al, 201833	Ghana	DM & HTN	208	57.30	41.30	58.70	C	Cross-sectional, Convenient S
Arisegi et al, 201834	Nigeria	DM & HTN	239	48.21	34.3	65.7		Cross-sectional, SRS
Chukwuocha, 201838	Nigeria	DM	91	59	33	67	O	Cross-sectional
Dar et al, 201939	Pakistan	HTN	384	51.4	52.90	47.10	Y	Cross-sectional, consecutive S
Ehidiamen et al, 201843	Nigeria	HTN	144	58.50	53.50	46.50	O	Cross-sectional, consecutive S
Mersal et al, 202050	Saudi Arabia	HTN	203	41.83	51.20	48.80	C	Cross-sectional,
Oparah, 201753	Nigeria	DM & HTN	148	54.30	45.90	54.10	O	Cross-sectional,
Poongothai et al, 201754	India	HTN	50	48.7	72.00	28		Observational
Venkatesh et al, 201661	India	HTN	105	47.50	66.70	33.5	C	Cross-sectional, consecutive S
Vincent et al, 201562	Nigeria	DM & HTN	200	47.50	66.70	33.30	O	Cross-sectional, consecutive S
Wahab et al, 201563	Nigeria	DM & HTN	314	56.40	47.10	52.90		Cross-sectional, consecutive S
Weltermann et al, 201365	Germany	DM	218	-	50.40	49.50	O	Cross-sectional
Konduru et al, 201747	India	DM	100	-	64.00	36.00		Prospective and observational
Chimberengwa et al, 201969	Zimbabwe	HTN	304	59.00	34.60	65.40		Cross-sectional
Okonta et al, 201452	South Africa	DM	217	-	-	-		Cross-sectional
Tesema et al, 2016 60	Ethiopia	HTN	130	-	57.70	42.30	O&C	Cross-sectional
Buda et al, 201737	Ethiopia	HTN	205	53.90	48.8	51.2		Cross-sectional
Durai et al, 201542	India	HTN	100	51	100	NP		Cross-sectional
Mutyambizi et al, 202068	South Africa	DM	396	-	39.24	60.76	MCQ	Cross-sectional
Rashidi et al, 201857	Iran	HTN	110	57.97	47.3	52.7	MCQ	Cross-sectional
Faiz et al. 201844	Norway	DM & HTN	173	68	63.6	36.4	O	Prospective cross sectional
Sheeba et al, 201759	India	DM	100	-	75	25		Cross-sectional, Convenient S
Dinesh et al, 201640	India	DM	400	-	62.25	38.75	C	Cross-sectional, Random
Bollampally et al, 201666	India	HTN	160	-	47.5	52.5	O	Prospective, observational
Warren-Findlow et al, 201164	Carolina	HTN	188	53	28.70	71.3		Cross-sectional
Rajan et al, 201955	India	HTN	200	56.6	40.5	59.5	MCQ	Cross-sectional, Convenient S
Kisokanth et al 201846	Sri Lanka	HTN	424	60.4	41	59	MCQ	Cross-sectional, SRS
Obirikorang et al, 201851	Ghana	HTN	300	63.6	62	38	Y	Cross-sectional, Simple Random
Bakhsh et al, 201736	Saudi Arabia	HTN	211	51.8	60.2	39.8	Y	Cross-sectional,
Rajasekharan et al, 201556	India	DM	290	47.9	60	40	MCQ	Cross-sectional, Convenient S
Metias et al, 201767	Canada	DM & HTN	791	-	-	-		Prospective Survey
Bacha et al 201935	Ethiopia	HTN	385	57.6	54.5	48.3		Cross-sectional, SRS
Duque et al, 201841	Portugal	HTN	163	-	-	-	O&C	Cross-sectional, Simple Random
N IK and B VR, 201548	India	DM & HTN	100	59	73	27	O	Retrospective cross sectional
Parappilly et al, 201917	Colombia	DM & HTN	100	66.6	60	4	MCQ	Cross-sectional, Convenient S
Kaddumukasa et al, 201745	Uganda	HTN	440	54	-	-		Cross-sectional,
Lai et al, 201549	Taiwan	DM	597	51.28	-	-		Retrospective, SRS
Selcuk Ozkan et al, 201958	Turk	HTN	336	53.2	39	61		Cross-sectional, consecutive S

Abbreviations: C, closed ended; O, open ended; MCQ, multiple choice questions; Y, yes/no questions; SRS, systematic random sampling; S, sampling; DM, diabetes mellitus; HTN, hypertension; Np, not participated.