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Table 2 Risk factors associated with prehypertension

From: Prevalence of prehypertension and associated risk factors among Chinese adults from a large-scale multi-ethnic population survey

Characteristics Univariate logistic model Multivariate logistic model
OR* 95 % CI* OR* 95 % CI*
Gender
 Male 1.917 1.833–2.005 2.076 1.952–2.208
 Female 1.0 (Ref.)   1.0 (Ref.)  
Age
 18–29 1.0 (Ref.)   1.0 (Ref.)  
 30–39 1.470 1.383–1.563 1.201 1.090–1.322
 40–49 2.171 2.042–2.308 1.607 1.456–1.773
 50–59 3.045 2.835–3.270 2.081 1.868–2.319
 60–69 3.847 3.515–4.210 2.498 2.204–2.831
 70–79 4.456 3.922–5.063 2.948 2.514–3.457
Marital status
 Married 1.0 (Ref.)   1.0 (Ref.)  
 Single 0.463 0.441–0.486 0.928 0.844–1.020
 Divorced/widowed 1.188 1.061–1.331 1.003 0.888–1.134
Educational level
 Illiterate or primary school 1.0 (Ref.)   1.0 (Ref.)  
 High school 0.763 0.715–0.814 0.919 0.851–0.992
 University 0.464 0.434–0.495 0.687 0.627–0.752
Occupation
 Physical laborer 1.0 (Ref.)   1.0 (Ref.)  
 Laborer with mental work 0.644 0.617–0.673 1.084 1.020–1.152
Ethnicity
 Han 1.0 (Ref.)   1.0 (Ref.)  
 Yi 1.129 1.026–1.244 1.347 1.210–1.500
 Miao 0.926 0.776–1.106 0.753 0.623–0.910
 Mongolia 1.065 0.949–1.196 1.042 0.920–1.179
 Tibetan 0.541 0.465–0.629 0.521 0.442–0.613
 Korean 1.231 1.078–1.406 0.965 0.837–1.111
 Hui 1.001 0.911–1.100 1.133 1.024–1.253
 Tujia 0.866 0.759–0.988 0.779 0.677–0.898
 Others 0.682 0.589–0.791 0.974 0.832–1.140
Smoker
 Never 1.0 (Ref.)   1.0 (Ref.)  
 Current 1.575 1.492–1.662 0.741 0.688–0.798
 Former 1.558 1.028–2.361 0.825 0.530–1.285
Alcohol drinker
 No 1.0 (Ref.)   1.0 (Ref.)  
 Yes 1.619 1.535–1.709 1.147 1.072–1.228
High-salt diets
 No 1.0 (Ref.)   1.0 (Ref.)  
 Yes 1.039 0.968–1.116 0.977 0.905–1.055
BMI
 General obesity 4.180 3.785 2.460 2.190–2.763
 Overweight 2.470 2.346 1.667 1.563–1.788
 Normal 1.0 (Ref.)   1.0 (Ref.)  
Abdominal obesity
 Yes 2.734 2.601–2.873 1.371 1.280–1.467
 No 1.0 (Ref.)   1.0 (Ref.)  
Family history of cardiovascular diseases
 No 1.0 (Ref.)   1.0 (Ref.)  
 Yes 1.172 1.089–1.262 1.132 1.045–1.226
  1. *OR odds ratio, CI confidence interval