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