3. Health information
system domains
■ health determinants
– socioeconomic, environmental behavioural and genetic factors
■ inputs to the health system and related processes
– policy, health infrastructure, facilities and equipment, costs,
human and financial resources and health information systems
■ the performance or outputs of the health system
– availability, quality and use of health information and services
■ health outcomes
– mortality, morbidity, disability, well-being, disease outbreaks
and health status
■ health inequities in determinants
– coverage and use of services, and outcomes
5. Essential sources of health-
related information
■ Census
■ Vital registration (births and deaths registration)
■ Survey
■ Institution-based data (hospitals, primary health
centers)
■ Surveillance program
6. surveillance
■ Surveillance is the ongoing, systematic
collection, analysis, interpretation, and
dissemination of data regarding a
health-related event for use in public
health action to reduce morbidity and
mortality and to improve health
(Center for Disease Control and Prevention/CDC)
7. Conceptual framework of public health surveillance and action
McNabb et al. BMC Public Health 2002 2:2 doi:10.1186/1471-
2458-2-2
8. Epidemic
response
Health Policy
Disease
control
Incidence data Administrative data
Resource
allocation
Health IndicatorsEarly warning information
Response/Action
Epidemic intelligence Health status monitoring
Disease monitoring Health system monitoring
9. Data information
knowledge model
■ Data: is a collection of facts, such
as values or measurements
■ Information: data that are
processed to be useful; provides
answers to "who", "what",
"where", and "when" questions
■ Knowledge: application of data
and information; answers "how"
questions
10. Source: Adapted from Bellinger, G. Knowledge Management and the Minnesota Department of Health
Health
Communities
13. Why use information
technology for surveillance?
■ Improve quality (Completeness,
Correctness, Timeliness)
■ Facilitate the use of standard (ICD-
10, ICD-9CM, ICPC)
• Maintain security and privacy
• Easier to transform data into
information
Pinner (1998); Savel and Foldy (2012)
18. Purpose and use of
surveillance
■ Detect epidemics
■ Evaluate control measures
■ Portray natural history of diseases
■ Monitor changes in infectious agent
■ Facilitate planning
■ Generate hypothesis and stimulate research