Estimation of prevalence of bacillary tuberculosis on the basis of chest x-ray and/or symptomatic screening
Gothi, G.D.; Narayan, Radha; Nair, S.S.; Chakraborty, A.K. and Srikantaramu, N. (1976) Estimation of prevalence of bacillary tuberculosis on the basis of chest x-ray and/or symptomatic screening. Indian Journal of Medical Research, 64 (8). pp. 1150-1159.
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The study was undertaken to find out precise estimates of prevalence of bacillary disease among 22,957 rural population by using X-ray screening and symptom screening. Prevalence rates of bacillary disease by the combination of symptom and X-ray screening procedure was 0.32 per cent. The rate obtained by X-ray screening alone was also the same. Addition of symptom screening did not improve the prevalence rate. The prevalence rate of bacillary disease obtained by symptom screening alone was 0.21 per cent and that by X-ray screening alone was 0.32 per cent. The latter is 1.5 times that of the former. This could be considered, a correction factor to be applied to the prevalence rates obtained by symptom screening alone. It was estimated that the cost of surveying the population by symptom screening alone is about half that of surveying the population by X-ray screening.
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