Property talk:P2844

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incidence
probability of occurrence of a given condition in a population within a specified period of time

Description	probability of occurrence of a given condition in a population within a specified period of time
Represents	incidence (Q217690)
Data type	Quantity
Domain	diseases, events (note: this should be moved to the property statements)
Allowed values	0 - 100000 cases per unit of person-time (note: this should be moved to the property statements)
Allowed units	cases per 100000 person-years (Q23893296), cases per million participant days (Q106081532), cases per person-year (Q23893259), cases per 100 million vehicle miles (Q107132000), cases per 100,000 flight hours (Q107132174) or cases per 100,000 workers per year (Q107133215)
Example	According to this template: tuberculosis (Q12204) → 1000 cases per 100000 person-years (Q23893296); qualifier point in time (P585) 2013; location (P276) Earth (Q2) According to statements in the property: hepatitis C (Q154869) → 0.5 cases per 100000 person-years stampede (Q2165983) → 0.005 cases per 100000 person-years When possible, data should only be stored as statements
Source	en:Incidence (note: this information should be moved to a property statement; use property source website for the property (P1896))
See also	prevalence (P1193)
Lists	Items with the most statements of this property Count of items by number of statements (chart) Items with the most statements Items with the fewest statements Count of items by number of sitelinks (chart) Items with the most sitelinks Items with the most sitelinks, but no link to one Wikipedia (sample: Welsh Wikipedia, cywiki) Items with the fewest sitelinks Most linked wikis Items with the most identifier properties Items with no other statements Most recently created items Items with novalue claims Items with unknown value claims Usage history (total) Usage history (main statement) Chart by item creation date Minimum and maximum Items with highest numeric value Items with lowest numeric value Database reports/Constraint violations/P2844 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 736 Main statement 697 94.7% of uses Qualifier 39 5.3% of uses

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Units: “cases per 100000 person-years (Q23893296), cases per million participant days (Q106081532), cases per person-year (Q23893259), cases per 100 million vehicle miles (Q107132000), cases per 100,000 flight hours (Q107132174), cases per 100,000 workers per year (Q107133215)”: value unit must be one of listed. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P2844#Units

Scope is as main value (Q54828448), as qualifier (Q54828449): the property must be used by specified way only (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P2844#Scope, SPARQL

Allowed entity types are Wikibase item (Q29934200): the property may only be used on a certain entity type (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P2844#Entity types

This property is being used by: it:Template:Infobox malattia (nuovo) Please notify projects that use this property before big changes (renaming, deletion, merge with another property, etc.)

Generalize property

I propose to generalize this property to be able to be used for other use cases that involve specifying the incidence of something. I've made an example here which gives the phenotypes for a particular disease and the incidence at which they occur. Other possible uses include specifying the allele or snp frequencies, or the frequency of drug side-effects. Gstupp (talk) 22:15, 31 October 2018 (UTC)