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Table 3 Prevalence of hypertension in brine workers and non-brine workers according to various characteristics.

From: Risk of high blood pressure in salt workers working near salt milling plants: A cross-sectional and interventional study

Characteristics Brine Workers Non-brine Workers
  No. Hypertensive cases No. Hypertensive cases
   No. %   No. %
Age <40 years 208 11 5.3 368 33 9.0
   40+ years 76 9 11.8 106 25 23.6
   Males 238 18 7.6 398 46 11.6
   Females 46 2 4.3 76 12 15.8
Illiterate 184 16 8.7 268 38 14.2
Literate 100 4 4.0 206 20 9.7
Annual income Rs.<18000 179 10 5.6 256 33 12.9
>18000 105 10 9.5 218 25 11.5
BMI <18 Kg/m2 109 3 2.8 185 18 9.7
   18+ Kg/m2 175 17 9.7 289 40 13.8
Duration of Work <10 Years 118 5 4.2 305 31 10.2
10+ Years 166 15 9.0 169 27 16.0
Smokers or ex-smokers 190 15 7.9 316 43 13.6
Non-smokers 94 5 5.3 158 15 9.5
Alcohol Users or ex-users 259 17 6.6 430 55 12.8
   Non-users 25 3 12.0 44 3 6.8
Tobacco chewing Yes 217 14 6.5 325 40 12.3
No 67 6 9.0 149 18 12.1
Diet Vegetarian 177 15 8.5 321 41 12.8
Mixed 107 5 4.7 153 17 11.1
Total Prevalence 284 20 7.0 474 58 12.2