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Sensitivity of paediatric AIDS score vs. WHO case classification in Indian children--a retrospective study

Tanushree Banerjee1, Tripti Pensi, Dipankar Banerjee

  • 1Department of Statistics, University of Delhi, New Delhi-110007, India. banerjee_tanushree@rediffmail.com

Journal of Tropical Pediatrics
|September 9, 2008
PubMed

Insights

This study evaluated the World Health Organization (WHO) clinical case definition for diagnosing pediatric Acquired Immunodeficiency Syndrome (AIDS) in resource-limited settings. A revised definition showed improved sensitivity and positive predictive value for identifying pediatric AIDS cases.

Area of Science:

  • Pediatrics
  • Infectious Diseases
  • Clinical Epidemiology

Background:

  • Limited diagnostic resources in many regions necessitate reliable clinical case definitions for Acquired Immunodeficiency Syndrome (AIDS).
  • The existing World Health Organization (WHO) clinical case definition (CCD) for pediatric AIDS requires validation in diverse settings.

Purpose of the Study:

  • To assess the statistical significance and diagnostic accuracy of the WHO CCD for pediatric AIDS.
  • To propose an improved clinical case definition for pediatric AIDS in resource-limited areas.

Main Methods:

  • A study group of 360 children (18 months to 12 years) meeting WHO AIDS case definitions was analyzed.
  • Sensitivity, specificity, and positive predictive value (PPV) of different clinical sign combinations were calculated.
  • Stepwise logistic analysis identified key predictors for pediatric AIDS.

Main Results:

  • HIV incidence was 16.66% in children attending the pediatric outpatient clinic.
  • A combination of three major and two minor signs yielded a sensitivity of 73.33% and specificity of 90.66%.
  • A proposed CCD based on 13 clinical signs/symptoms demonstrated higher sensitivity (86.66%) and PPV (88.66%) compared to the WHO definition, with similar specificity.

Conclusions:

  • The WHO CCD has limitations in diagnosing pediatric AIDS, particularly in resource-limited settings.
  • A revised clinical case definition incorporating specific clinical signs and symptoms offers improved diagnostic accuracy for pediatric AIDS.
  • Key predictors like weight loss, chronic fever, and low lymphocyte count are crucial for identifying pediatric AIDS.

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