Prevalence of Elevated Blood Pressure and Association with Obesity in Egyptian School Adolescents

Table 1

Distribution of the study sample of school adolescents according to patterns of blood pressure and body composition by sex.

	Male (𝑛=750)		Female (𝑛=750)		Total (1500)
	No.	%	No.	%	No.	%
BP
Normal BP	667	89.0	687	91.6	1354	90.3
Prehypertension	49	6.5	36	4.8	85	5.7
Stage I HBP	21	2.8	22	2.9	43	2.8
Stage II HBP	13	1.7	5	0.7	18	1.2
Prevalence@	83	10.0	63	8.4	146	9.7
Sex difference	𝜒^2=5.86, df=4, 𝑃=.12
BMI percentiles
<5th underweight	312	41.6	291	38.8	603	40.2
5th–85th (normal weight)	349	46.5	394	52.5	743	49.5
85th–95th (overweight)	46	6.1	48	6.4	94	6.3
≥95th (obese)	43	5.7	17	2.3	60	4.0
Prevalence#	89	11.8	65	8.7	155	10.3
Sex difference	𝜒^2=14.77, df=3, 𝑃=.002
WHR
Nonobese	748	99.7	511	68.1	1259	83.9
Obese (Prev.)	2	0.3	239	31.9	241	16.1
	𝜒^2=277.7, df=1, 𝑃=<.001
WC percentiles
Non obese <90th	706	94.1	726	96.8	1432	95.5
Obese ≥90th (Prev.)	44	5.9	24	3.2	68	4.5
Sex difference	𝜒^2=6.16, df=1, 𝑃=.013
WHtR
<0.5	611	81.5	639	85.2	1250	83.3
≥0.5 (Prev.)	139	18.5	111	14.8	250	16.7
Sex difference	𝜒^2=3.76, df=1, 𝑃=.052

^@Prevalence of elevated BP includes prehypertensive adolescents.
^#Prevalence of overweight and obesity.