Blood pressure and associated factors in a North African adolescent population. a national cross-sectional study in Tunisia

Table 2 Unadjusted associations of socio-demographic and lifestyle factors, Body Mass Index and Waist Circumference with blood pressure

	Boys						Girls
	Elevated BP¹			Hypertension			Elevated BP¹		Hypertension
	n	%²	P³	%²	P³	n	%²	P³	%²	P³
Area
Urban	707	46.6	0.69	4.4	0.90	825	29.0	0.0010	3.8	0.011
Rural	587	45.2		4.2		751	40.4		7.3
Household's economic level
Low	526	45.6		3.0		645	37.9		6.5
Intermediate	427	44.0	0.44	4.2	0.35	552	33.2	0.037	4.5	0.068
High	283	49.5		5.5		299	27.4		2.6
Attending school
Yes	893	44.1	0.079	4.2	0.73	1151	30.6	0.0012	4.1	0.003
No	399	50.8		4.7		421	41.2		8.3
Proportion of low physical activity
1 ^st tertile (low)	562	44.5		2.3		283	30.3		5.6
2 ^nd tertile (middle)	413	46.3	0.56	5.0	0.0096	543	31.6	0.18	3.6	0.13
3 ^rd tertile (high)	319	49.0		7.4		750	36.0		6.1
Perceived stress
1 ^st tertile (low)	473	44.6		4.0		504	33.3		5.8
2 ^nd tertile (middle)	474	47.0	0.82	5.6	0.30	566	35.8	0.33	3.8	0.25
3 ^rd tertile (high)	341	46.1		3.0		500	30.6		5.9
Body Mass Index
No excess weight	1011	39.6		2.7		1161	28.9		3.3
Overweight	218	65.9	< 10^-4	4.8	< 10^-4	337	43.5	< 10^-4	8.7	< 10^-4
Obesity	65	74.4		26.0		78	52.8		15.3
Waist Circumference
1 ^st tertile	496	31.6		2.5		632	23.8		3.5
2 ^nd tertile	433	43.9	< 10^-4	1.4	< 10^-4	468	32.6	< 10^-4	3.5	< 10^-3
3 ^rd tertile	358	64.1		9.7		471	44.8		8.7

1-Blood Pressure
2-Weighted prevalences (accounting for unequal probabilities of selection and/or differential response rates)
3-P-value for unadjusted association between elevated BP or hypertension and variable in left column

ISSN: 1471-2458