Prevalance of undernutrition among peri-urban children and its influence on the estimation of annual risk of tuberculosis infection
Chadha, V.K.; Suryanarayana, H.V.; Krishnamurthy, M.K.; Jaganath, P.S. and Sashidhara, A.N. (1997) Prevalance of undernutrition among peri-urban children and its influence on the estimation of annual risk of tuberculosis infection. Indian Journal of Tuberculosis, 44. pp. 67-71.
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Tuberculin reactions of 4575 children aged 1 to 9 years without BCG sear, residing in 60 randomly selected villages around Bangalore city were examined in relation to their nutritional status. Classifying the children for nutritional status with reference to ICMR data for healthy south Indian children by Quitlet's Index (Method A) and weight for age (Method B), about 30% were found to be undernourished. Severely undernourished children constituted 2.6% of the total study population. Based on the frequency distribution of tuberculin reactions, 5% of the overall tested children were found to be reactors at 20 min, demarcation level. The proportion of reactors was significantly higher among 'normals' (5.6% by Method A and 5.5% by Methods B) than among 'undernourished' (3.8%) by Method A and 4.1% by Method B). The value of ART, estimated from the proportion of reactors among overall study group, was lower by 12% when compared to ART estimated from the proportion of reactors among ‘normals', classified by Method A. It was 10% lower by Methods B.
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