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Free Content Accuracy of classification of notified tuberculosis cases in Taiwan

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Abstract:

SETTING: Tuberculosis (TB) suspects and cases reported in 2003 in Taiwan.

OBJECTIVES: To evaluate the accuracy of the classification of notified TB cases in Taiwan.

DESIGN: A list of all TB cases reported in 2003 in Taiwan was obtained from the Taiwan Center for Disease Control, along with their classification. TB cases residing in Taipei City were investigated by consulting their medical charts.

RESULTS: Of 1973 patients, 782 (39.6%) were bacteriologically confirmed, 1024 (52%) were not bacteriologically confirmed (indeterminate) and 167 (9%) were not TB cases (in whom non-tuberculosis mycobacteria [NTM] was isolated). Of the 1973 cases, 1716 (87%) had been treated with anti-tuberculosis drugs, while 257 (13%) had not been treated. Of the 782 bacteriologically confirmed cases, 68 (8.7%) were misclassified as non-notifiable (32 [4.1%] had their diagnosis changed by a clinician and 36 [4.6%] by administrative coding). Of the 167 cases in whom NTM were isolated, 72 (43.1%) were misclassified as TB cases. Of the 257 untreated suspects, 31 (12.1%) did not have any evidence of TB (20 indeterminate and 11 NTM cases) and were questionably classified as newly diagnosed cases.

CONCLUSION: There was substantial misclassification of notified TB cases in Taiwan.

Keywords: Taipei; notification; tuberculosis

Document Type: Regular Paper

Affiliations: 1: International Union Against Tuberculosis and Lung Disease, Paris, France 2: National Tuberculosis Association, Taipei, China 3: Center for Disease Control, Taipei, Taiwan

Publication date: 2007-08-01

More about this publication?
  • The International Journal of Tuberculosis and Lung Disease publishes articles on all aspects of lung health, including public health-related issues such as training programmes, cost-benefit analysis, legislation, epidemiology, intervention studies and health systems research. The IJTLD is dedicated to the continuing education of physicians and health personnel and the dissemination of information on tuberculosis and lung health world-wide.

    Certain IJTLD articles are selected for translation into French, Spanish, Chinese or Russian. They are available on the Union website

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