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Ongoing Research Activities

RP/234: CAPTURE-RECAPTURE TO ESTIMATE INCIDENCE, PERIOD PREVALENCE AND COMPLETENESS OF TUBERCULOSIS CASES REPORTING UNDER RNTCP IN TUMKUR DISTRICT 

The Capture- recapture approach has been used recently in some countries to estimate TB incidence and completeness of reporting. In this method, the patient data in the notification or official recording register is compared with multiple other data sources through record linkage. The total number of patients recorded in any form of data sources combined with the number of patients not recorded in any source would provide the estimates of incidence and period prevalence. Following the similar strategy, the National Tuberculosis Institute, Bangalore is carrying out a Capture- recapture study in Tumkur district of Karnataka state. The objectives of the study are:

1.      To estimate the incidence and period prevalence of Tuberculosis disease during the course of one year.

2.      To assess the case –finding efficiency of the RNTCP.

 The methodology involves reporting of all type of TB cases from the private health care providers (namely, private nursing homes, medical colleges, hospitals etc) in the prescribed study register. All the private health care providers were sensitized on operational strategy of RNTCP. Recording of cases managed by private practitioners independently, in terms of diagnosis or treatment, without any support of program in the study register. Collection of data from the private health care providers by STS/STLS. Matching  of collected data will be done with RNTCP data.

 The study findings will throw light on the objectives of the study. Besides, attaining the objectives, lessons learnt will also provide vital inputs for planning the national level study in the future.

 

RP/233 : CHALLANGES IN IMPLEMENTATION OF DIAGNOSTIC ALGORITHM FOR PATIENTS HAVING SYMPTOMS SUGGESTIVE OF PULMONARY TB WITH SMEAR NEGATIVE REPORT ON INITIAL SPUTUM EXAMINATION

The practices of the RNTCP providers in managing the smear negative patients play a crucial role in completing the diagnostic algorithm. Beside, understanding the action taking behaviour of patients would provide necessary inputs towards improving the case finding efficiency for smear negative PTB. Therefore a study is being carried out by the National Tuberculosis institute to find out the proportion of smear negative patients that completed the diagnostic algorithm in 4 selected districts (viz Mysore, Mandya, Chikkamangalur and Shimoga) of Karnataka State. The objectives of the study are:

1.      To find out the proportions of smear negative patients that completed the diagnostic algorithm under RNTCP in Karnataka state.

2.      To find out the health system and patient related barriers to completion of diagnostic algorithm for smear negative patients.

3.      To gain the insights into the care seeking behaviour of smear negative patients.

Selection of districts was based on the ratio of notified smear positive and smear negative PTB cases and simple random sampling (SRS). In each selected district 20% of the DMC’s  are selected by stratified random sampling , the strata will be based on location in rural/urban area and availability of x-ray facility within the DMC. In each selected DMCs, the number of smear negative cases will be listed by using the lab register. All the listed patients will be interviewed by the study team using a semi-structured questionnaire.

The finding of the study would help the health system to undertake corrective actions towards improving the diagnostic efficiency for smear negative TB cases.

  

 

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