Lesson 4
This presentation is the property of its rightful owner.
Sponsored Links
1 / 27

Lesson 4 PowerPoint PPT Presentation


  • 124 Views
  • Uploaded on
  • Presentation posted in: General

Lesson 4. Sources of Routinely Collected Data for Surveillance. Objectives for Lesson 4. Describe notifiable disease and reporting mechanisms Describe vital statistics Define and describe sentinel surveillance Describe uses of surveys Describe registries.

Download Presentation

Lesson 4

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Lesson 4

Lesson 4

Sources of Routinely Collected Data for Surveillance


Lesson 4

Objectives for Lesson 4

  • Describe notifiable disease and reporting mechanisms

  • Describe vital statistics

  • Define and describe sentinel surveillance

  • Describe uses of surveys

  • Describe registries


Lesson 4

Objectives for Lesson 4 (continued)

  • Describe surveys

  • Differentiate between surveys and registries

  • Describe types of administrative data-collection systems


Lesson 4

Types of Surveillance

  • Selected individuals report

  • Passive: initiated by provider

  • Active: initiated by the health department

  • Sentinel


Lesson 4

Limitations of Reporting Systems

  • Under reporting

  • Incomplete reporting

* If consistent surveillance methods are used, data will describe trends despite under reporting


Lesson 4

Factors Contributing to Incomplete Reporting

  • Concealment due to social stigma

  • Lack of awareness of requirements

  • Inadequate knowledge of case definitions

  • Changes in procedures

  • Variations in diagnosis skills

  • Low priority


Lesson 4

Strengths of Reporting System

  • Quick information

  • Detect changes in patterns

  • Detection of outbreaks

  • Availability of information from all jurisdictions

  • Basis for prevention recommendations


Lesson 4

Potential Changes in Notifiable Disease Reporting

Increased:

Reliance on laboratory-based reporting

Use of sentinel health care providers

Use of sentinel sites

Use of computerized data bases


Lesson 4

Vital Statistics

  • Only health related data available in many countries in a standard format

  • Often the only source available for estimating rates for small geographical areas


Lesson 4

Uses of Vital Statistics

  • Identify differences in health status within groups

  • Assess differences by geographic area or occupation

  • Monitor deaths considered to be preventable

  • Generate hypotheses regarding possible cause/correlates of disease

  • Conduct health planning activities

  • Monitor progress towards health goals


Lesson 4

Birth Certificates

  • Responsibility of states in U.S.

  • Adoption of standard certificates encouraged

  • Usually filed within 24 hours

  • Includes date, time, and additional information


Lesson 4

Death Certificate Information

  • Cause of death

  • Interval between onset of condition and death

  • Other important medical conditions

  • Manner of death

  • Whether an autopsy was performed

  • Whether medical examiner/coroner was notified


Lesson 4

ICD-9

A tabular list of categories and conditions

including:

  • code numbers

  • definitions of key terms

  • rules for selecting underlying causes of death

  • lists of conditions for statistical summaries

    Useful for:

  • classifying conditions

  • calculating rates


Lesson 4

Issues in comparability and quality control

  • Factors influencing quality of vital statistics

  • Factors influencing comparability of vital statistics

  • Population estimates

  • Population undercounts

  • Comparison of cause-specific rates

  • Impact of use of certain ICD codes


Lesson 4

Surveillance Systems Based on Vital Statistics

  • Weekly reports (some)

  • Monthly or quarterly reports

  • Infant mortality and other adverse reproductive outcomes

  • Occupational mortality

  • Additional sources


Lesson 4

Sentinel Surveillance

  • Encompasses a wide range of activities focused on monitoring key health indicators in general or in special populations


Lesson 4

Sentinel refers to

  • Key health events

  • Clinics or other sites at which health events are monitored

  • Reporters who report specific health events


Lesson 4

Sentinel Sites

  • Hospitals

  • Clinics

  • Counties


Lesson 4

Role of Sentinel Sites

  • Monitor conditions for which information is not otherwise available

  • Monitor conditions in subgroups which are more vulnerable than general population


Lesson 4

Sentinel Providers

  • Report surveillance data

  • Higher quality data

  • Can be used to calculate or estimate disease morbidity


Lesson 4

Uses for Registries

  • Monitor chronic disease

  • Link information from multiple sources over time

  • Collect data systematically

  • Identify opportunities for disease control and prevention


Lesson 4

Types of Registries

  • Case series and hospital-based

  • Population-based

  • Exposure


Lesson 4

Surveys

  • Provide information for assessing prevalence of health conditions and risk

  • Monitor changes in prevalence over time

  • Assess knowledge, attitudes, and practices


Lesson 4

Differences Between Survey and Registry

  • Individuals usually queried only once in a survey

  • Data obtained by interview in a survey

  • Surveyed population is generally representative of source population


Lesson 4

Types of Surveys

Health Interview Surveys

NHIS, GHS, BRFSS, YRBS

Provider-based Surveys

NHDS, NAMCS, NDTI

Other Surveys

NSFG, NHANES


Lesson 4

Administrative Data Collection Systems

  • Availability and usefulness

  • Integrated health information systems

  • Hospital discharge data systems

  • Emergency room data collection

  • Ambulatory care data


Lesson 4

Data Collection Systems

  • Home Accident Surveillance System (HASS)

  • European Home and Leisure Accident Surveillance System (EHLASS)

  • National Electronic Injury Surveillance System (NEISS)

  • Drug Abuse Warning Network (DAWN)

  • Poison control centers, burn units, trauma registries


  • Login