ResultsA total of 47,401 [men (44.6%) and women(55.4%)] 20 yr were covered in the study. TheLaxmaiah et al: determinants of hypertension among tribal men & women 699coverage was not uniform for all the variables due tonon-response; therefore, the number covered for eachvariable was marginally different. Age-wise mean andSD for SBP and DBP are provided in Table I. The agestandardized mean SBP was 126.3 mmHg in men and126.2 mm Hg in women, while the age standardizedmean DBP was 79.9 mmHg and 79.1 mmHg amongmen and women, respectively. The mean systolic BPsignificantly (p<0.001) increased with increase of age,117-120 mmHg at 20-30 yr and 144-145 mmHg at theage 80 yr and above. Regression analysis showed asignificant association between BP and age. Regressioncoefficient (b) was significant in both the groups andshowed that there was an increase in systolic BP by0.41 mmHg in men and by 0.55 mmHg in women,while in the diastolic BP by 0.18 mmHg in men andby 0.22 mmHg in women with every 10 yr increase inage.
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