incidence


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Related to incidence: Incidence matrix, Normal incidence

incidence

 [in´sĭ-dens]
the rate at which a certain event occurs, as the number of new cases of a specific disease occurring during a certain period in a population at risk, in contrast to prevalence.

in·ci·dence

(in'si-dens), Do not confuse this word with prevalence.
1. The number of specified new events, for example, people falling ill with a specified disease, during a specified period in a specified population.
2. In optics, intersection of a ray of light with a surface.
[L. incido, to fall into or upon, to happen]

incidence

/in·ci·dence/ (-sid-ins) the rate at which a certain event occurs, as the number of new cases of a specific disease occurring during a certain period in a population at risk.

incidence

[in′sidəns]
Etymology: L, incidere, to happen
1 the number of times an event occurs.
2 (in epidemiology) the number of new cases in a particular period. Incidence is often expressed as a ratio, in which the number of cases is the numerator and the population at risk is the denominator. See also rate.

incidence

Epidemiology 
1. The number of new cases–in the form of a count or rate of a disease or condition, often an infection diagnosed each yr–classically measured as an attack rate.
2. The rate of occurrence of new cases of a disease or condition in a population at risk during a given period of time, usually 1 yr.

in·ci·dence

(in'si-dĕns)
1. The number of specified new events, e.g., people falling ill with a specified disease, during a specified period in a specified population.
2. optics Intersection of a ray of light with a surface.

incidence

The number of cases of an event, such as a disease, occurring in a particular population during a given period. Incidence is usually expressed as so many cases per 1000, or per 100,000, per year. Compare PREVALENCE.

incidence

number of new disease cases, within a defined population, within a specific time period (contrast with prevalence)

incidence

1. The intersection of a ray of light with an optical surface. 2. The number of new cases of a specific disease or condition occurring during a specific period of time (e.g. 1 year) divided by the population at risk during that period. Example: the incidence of keratoconus in Olmsted County, Minnesota was found to be 2 cases per 100 000 population a year. See prevalence.

in·ci·dence

(in'si-dĕns) Do not confuse this word with prevalence.
Number of specified new events, during a specified period in a specified population.

incidence (in´sidəns),

n 1. the number of times an event occurs.
2. the number of new cases in a particular period. Incidence is often expressed as a ratio, in which the number of cases is the numerator and the population at risk is the denominator.

incidence

the rate at which a certain event occurs, as the number of new cases of a specific disease occurring during a certain period.

incidence reporting schemes
prospective gathering of epidemiological data on incidence of nominated diseases.

Patient discussion about incidence

Q. Is it possible to get ADHD from suffering a traumatizing incident? lately, after the death of my Grandmother. I have been increasingly getting the symptoms of ADHD. I have suffered from some of the symptoms during my childhood, but now they are increasingly occurring. And I am finding it really hard to listen to Teachers, follow instructions and do coursework. Is it possible this was caused by the death of my grandmother?

A. I think you should look up depression. ADHD is something that does not “pop”, more reasonable to think is that you suffer from a slight depression. Check it out and see if it fits :
http://www.nlm.nih.gov/medlineplus/depression.html

Q. Is the incidence of breast cancer growing everyday? I have a small lump in my breast. My friends suggested me to have a regular mammogram as a precautionary step. My friend’s family women are having it yearly. But I am confused…Why is the need to go for mammogram without any problem. I think routine medical check-up is sufficient. Is the incidence of breast cancer growing everyday?

A. NO….its not increasing. I had my breast cancer found in early stages, 6 month back. I was lucky. You know why—I had my mammogram done just by fear of having it in future. In order to avoid any I did and was very lucky as it was found and soon cured. Most female take it as precaution and you should too. Apart from mammogram you must have clinical breast examination.

More discussions about incidence
References in periodicals archive ?
The increases in the incidence, prevalence (incidence x duration), morbidity, and mortality from asthma during the past few decades in many parts of the world have led to renewed consideration of this disease by researchers both in basic and clinical science.
Furthermore, based on previous analysis of HIV subtype C seroconverter samples (Ethiopia, Zimbabwe) done at the CDC we have applied a window period of 180 days in our incidence calculation.
vivax malaria incidence has increased in the Oyapock region, from 30% in 1987 to 50% in 2000-2004 (2,4-7).
This seems unlikely because most other countries at a similar point in the epidemic had continuing increases in HIV incidence and prevalence, not the decline that Uganda had.
Among women, since 1989, overall cancer incidence rates have risen slightly (due largely to lung cancer and breast cancer) and death rates have declined slightly.
Overall, cancer incidence rates are higher for whites and blacks than for Asians/Pacific Islanders.
ANGIOMAX is a small-molecule, reversible, direct thrombin inhibitor that has been shown to reduce the incidence of death, myocardial infarction, and the need for revascularization in patients undergoing balloon angioplasty.
and her associates attributed the increased incidence of breast cancer to better detection.
In addition, co-infection with hepatitis is believed to be a factor in the increased incidence of liver failure.
Since the studies (provided by Lockheed) show that the incidence of cancer in the Burbank community is not double the incidence of cancer in Los Angeles County,'' West wrote, ``this evidence shows, at best, an insignificant association between the company's use of TCE, PCE and chromium-6 and the plaintiffs' injuries.
The incidence of new cases recorded during a specified period of time are often cited for a particular disorder.