case definition


Also found in: Wikipedia.

case definition

Epidemiology A set of standard criteria for diagnosing a particular disease or health-related condition, by specifying clinical criteria and limitations on time, place, and person

case def·i·ni·tion

(kās def'i-nish'ŭn)
Established parameters that define a case in an outbreak investigation.
References in periodicals archive ?
It was further recommended that not only case definition of Crimean Congo Hemorrhagic case be essentially circulated among all case health providers, including GPs as they are the first approached by patients in general, but personal protective equipment, ribavirin and other medication be arranged for clinicians.
Among evaluated diagnosis codes, those with the highest positive predictive values (PPVs) for identifying confirmed cases of NAS, based on a uniform case definition, were drug withdrawal syndrome in a newborn (ICD-9-CM code 779.5; state range = 58.6%-80.2%) and drug withdrawal, infant of dependent mother (ICD-10-CM code P96.1; state range = 58.5%-80.2%).
The report also stated that since the onset of the outbreak, there has been a high case 'identification rate' through the use of 'standard case definition' employed via the integrated disease surveillance and response (IDSR) strategy.
In sensitivity analyses on dementia case definition or older study populations, alcohol use disorders remained associated with dementia onset for both sexes (adjusted hazard ratios > 1.7).
During the outbreak in Sierra Leone, patients arriving at healthcare facilities were screened for EVD using World Health Organization (WHO) case definitions. Those fulfilling the case definition for suspected EVD were admitted to Ebola holding units (EHUs) to have blood taken for EVD testing and receive medical care until test results were available (online Technical Appendix Figure 1, https://wwwnc.cdc.gov/EID/article/24/2/17-1018-Techapp1.pdf).
Using the international AGI case definition of three or more loose stools in 24 hours and any vomiting [24], the overall monthly prevalence was 5.7% (95% CI 4.6-7.2, weighted n = 1,887,588) corresponding to an annual incidence rate of 0.77 episodes/person-year (95% CI 0.61-0.97) and 26.3 million episodes of AGI per year in Canada (Table 2).
As a result, most individuals were diagnosed based on clinical impression or use of a symptom-based case definition. Laboratory-confirmed cases, therefore, likely reflect only a fraction of the total cases that occurred in Jamaica.
We calculated the sensitivity, specificity, PPV, and NPV, for each case definition according to four reference standards.
"In our opinion, pruritus, the second most common clinical sign presented by the confirmed cases, should be added to the Pan American Health Organization case definition [for Zika virus disease], while fever could be given less emphasis," Dr.
To assist in case finding, the West Virginia Division of Infectious Disease Epidemiology (DIDE) requests that healthcare providers, hospitals, and other healthcare facilities immediately report any persons fitting the following case definition to their local health department or DIDE at (304) 558-5358.
The second, more sensitive case definition required the appearance of only a single ambulatory medical encounter with a given ICD-9 code.
The Institute of Medicine (IOM) drafted a committee of 16 experts at the request of the Department of Veterans Affairs to try to develop a case definition for what's now called Gulf War illness in order to help standardize diagnosis, inclusion in research studies, and treatments.