Table 1.

Incidence and prevalence of HF in studies on primary HF diagnosis

Study name	Study design	Country, period	Setting	Study population (age range)	Subgroups	Type of HF	Sample size	Gender		Cases (n)	(%)	Per 100,000
								Female (n)	Female (%)
Incidence of HF as a primary diagnosis
Andrews [13]	Prospective	UK and Ireland, 2003 (1 year)	Hospitals (17)	Hospitalized HF cases (0–16 years)	All patients	HF	11,712,100*	NR	NR	104	NR	0.87
Massin [17]	Prospective	Belgium, 1996–2006 (10 years)	Hospital (1)	Hospitalized cases (0–16 years)	All patients	HF	1196	620	51.8*	124	10.4	–
Neumann [14]	Retrospective	Germany, 2000–2006 (7 years)	Country wide hospitals	Hospitalized HF cases (0–< 15 years)	Years 2000–2006 (7 years)	HF	NR	NR	NR	NR	NR	2.0–3.0
Schmidt [15]	Retrospective	Germany, 1995 and 2009 (2 distinct years)	Country wide hospitals	Hospitalized HF cases	Year 1995	HF	1,32,38,000	NR	NR	265	NR	2
					Year 2009	HF	1,10,30,000	NR	NR	221	NR	2
Tseng [16]	Retrospective	Taiwan, 2005 (1 year)	Country wide hospitals	Hospitalized HF cases (0–14 years)	All patients	HF	190,362*	90,873	47.7	14*	NR	7.4*
					0–4 years	HF	55,262	26,319	47.6	12	NR	21.7
					5–9 years	HF	65,636	31,355	47.8	0	NR	0
					10–14 years	HF	69,464	33,199	47.8	2	NR	2.9
				Males	0–14 years	HF	99,489*	–	–	6	NR	6.0*
				Females	0–14 years	HF	90,873*	90,873	100	8*	NR	8.8*
Prevalence of HF as a primary diagnosis
Adekanmbi [18]	Prospective	Nigeria, 2002–2003 (1 year)	Hospital (1)	Hospital admissions and ER	All patients	Congestive HF	1552	NR	NR	109	7	–
				(1 day–14 years)
Animasahun [19]	Prospective	Nigeria, 2011–2012 (2 years)	Hospital (1)	Hospital admissions	All patients	Congestive HF	5705	NR	NR	156	2.7	–
				(1 day–12 years)
Jiménez-García [20]	Cross-sectional	Spain, 2012–2013 (1 year)	Community (Madrid)	Influenza vaccination coverage (6 months–14 years)		HF	9,81,855	4,77,928	48.7	818	0.1	83.3*
Rodríguez-Rieiro [21]		Spain, 2009 (point prevalence)			Patients with chronic diseases	HF	1,17,940	48,806	41.4	689	0.6*	77$
Lagunju [22]	Prospective	Nigeria, 2000–2001 (10 months)	Hospital (1)	Hospital admissions (8 days–12 years)	All patients	Congestive HF	1713	NR	NR	100	5.8	–
Oyedeji [23]	Prospective	Nigeria, 2007 (6 months)	Hospital (1)	Patients in ER (1 month–12 years)	All patients	Congestive HF	391	NR	NR	35	9	–

ER emergency room, HF heart failure, NR not reported

*Calculated values from the source article

^$Reported as prevalence of 7.7 per 10,000 inhabitants