Prevalence of hypertension and blood pressure profile amongst urban-dwelling adults in Nigeria: a comparative analysis based on recent guideline recommendations

Table 4 Prevalence of hypertension using the ACC/AHA 2017 and the JNC7 (2003) guidelines

Category	ACC/AHA 2017	Statistics	JNC7 2003	Statistics
Overall (n = 5365)	3003 (56.0%)		1473 (27.5%)
Females (n = 2781)	1475 (53.0%)	OR 1.28 (1.15–1.43); p = 0.000*	738 (26.5%)	OR 1.10 (0.98–1.24); p = 0.12
Males (n = 2584)	1528 (59.1%)	OR 1.28 (1.15–1.43); p = 0.000*	735 (28.4%)	OR 1.10 (0.98–1.24); p = 0.12
Age category, years
Below 20 (n = 291)	87 (29.9%)		30 (10.3%)
20 to 39 (n = 2999)	1404 (46.8%)		529 (17.6%)
40 to 59 (n = 1710)	1220 (71.3%)	p = 0.000	699 (40.9%)	p = 0.000
≥ 60 (n = 365)	292 (80.0%)		215 (58.9%)

Previously diagnosed (known hypertensives) whose BP was ‘normal’ at study evaluation and thus BP not categorized as hypertension: n = 56 using JNC7 and n = 26 by ACC/AHA 2017 (multiplied by 3.5% to accommodate 187 missing data = 58 and 27 respectively). Prevalence adjusted to include additional known hypertensives would be as follows: ACC/AHA = 3030/5365 i.e. 56.5% and 1531/5365 = 28.5%

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