[Underreporting of tuberculosis in the Information System on Notifiable Diseases (SINAN): primary default and case detection from additional data sources using probabilistic record linkage].
This study aimed to analyze underreporting of tuberculosis (TB) cases in the Information System on Notifiable Diseases (SINAN), based on the following data sources: Mortality Information System (SIM), Registry and Follow-up Book for TB Case Treatment (LPATB), and Laboratory Registry Book (LRLAB). Probabilistic record linkage was used between the SIM (2007-2008) and SINAN (2002-2008). A search was conducted in LPATB and LRLAB (2007-2008) for cases not recorded in SINAN. There were 125 deaths, of which 44.8% were not recorded in SINAN. In LPATB, 58 cases (5.1%) were in treatment and were not reported in SINAN. LRLAB showed 32 smear-positive cases not reported to SINAN and without treatment, representing primary default. Addition of the retrieved cases, led to a 14.6% increase in the incidence rate in 2007 and 11.6% in 2008. Underreporting of deaths from or with TB in the Mortality Information System and primary default revealed difficulties in access to adequate and timely treatment, calling for rethinking of strategies to detect cases for timely treatment.
Instituto de Estudos em Saúde Coletiva, Universidade Federal do Rio de Janeiro, Brasil. rejane@iesc.ufrj.br
Rejane Sobrino
RS
Pinheiro
Vanusa de Lemos
Vde L
Andrade
Gisele Pinto de
GP
Oliveira
D001938:Brazil / Q000453:epidemiology; D018563:Disease Notification; D062665:Epidemiological Monitoring; D006801:Humans; D015994:Incidence; D007256:Information Systems / Q000706:statistics & numerical data*; D008498:Medical Record Linkage; D011159:Population Surveillance / Q000379:methods*; D011786:Quality Control; D014376:Tuberculosis / Q000453:epidemiology*