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Table 3 Adjusted associations of socio-demographic and lifestyle factors, Body Mass Index and Waist Circumference with blood pressure

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

  Boys(n = 12211) Girls(n = 14841)
  Elevated BP2   Hypertension Elevated BP2 Hypertension
  Adjusted OR3
(CI95%)
P4 Adjusted OR3
(CI95%)
P4 Adjusted OR3
(CI95%)
P4 Adjusted OR3
(CI95%)
P4
Area
   Urban 1 0.49 1 0.22 1 0.021 1 0.081
   Rural 1.1 (0.8-1.5)   1.6 (0.8-3.5)   1.5 (1.1-2.1)   1.6 (0.9-2.8)  
Household's economic level
   Low 1   1   1   1  
   Intermediate 0.8 (0.6-1.1) 0.29 1.6 (0.7-3.7) 0.27 0.9 (0.7-1.3) 0.52 0.8 (0.5-1.5) 0.62
   High 1.0 (0.7-1.5)   2.1 (0.8-5.5)   0.8 (0.5-1.2)   0.6 (0.2-1.8)  
Attending school         
   Yes 1 0.065 1 0.32 1 0.033 1 0.088
   No 1.4 (1.0-2.0)   1.5 (0.7-3.4)   1.4 (1.0-1.8)   1.8 (0.9-3.5)  
Proportion of low physical activity
   1 st tertile (low) 1   1   1   1  
   2 nd tertile (middle) 1.2 (0.9-1.6) 0.35 2.3 (1.0-4.9) 0.072 1.1 (0.8-1.6) 0.054 0.7 (0.3-1.4) 0.075
   3 rd tertile (high) 1.3 (0.9-1.8)   2.8 (1.1-7.0)   1.4 (1.0-1.9)   1.4 (0.7-2.9)  
Perceived stress         
   1 st tertile (low) 1   1   1   1  
   2 nd tertile (middle) 1.0 (0.7-1.4) 0.88 1.1 (0.5-2.2) 0.45 1.1 (0.8-1.6) 0.54 0.7 (0.3-1.3) 0.25
   3 rd tertile (high) 0.9 (0.7-1.3)   0.7 (0.3-1.6)   1.0 (0.7-1.4)   1.1 (0.6-2.0)  
Body Mass Index
   No excess weight 1   1   1   1  
   Overweight 2.0 (1.3-2.9) 0.0014 0.9 (0.4-2.4) 0.012 1.5 (1.1-2.1) 0.0028 2.1 (1.0-4.3) 0.0017
   Obesity 2.1 (1.0-4.2)   3.5 (1.4-8.9)   2.3 (1.3-3.9)   5.4 (2.2-13.4)  
Waist circumference
   1 st tertile 1   1   1   1  
   2 nd tertile 1.7 (1.3-2.3) < 10-4 0.5 (0.2-1.7) 0.0046 1.6 (1.2-2.1) 0.0001 1.0 (0.4, 2.2) 0.50
   3 rd tertile 2.8 (1.9-4.2)   2.7 (1.1-6.6)   2.1 (1.5-3.0)   1.5 (0.7-3.2)  
  1. 1-Complete case analysis
  2. 2- Blood pressure
  3. 3- OR: Odds-Ratio, adjusted for age and all the variables in the first column
  4. 4- Adjusted for age and all the variables in the first column