Property talk:P4294

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PROSPERO ID
identifier for a study, in the PROSPERO database

Applicable "stated in" value	PROSPERO (Q28736078)
Has quality	prefix (Q23585486)
Data type	External identifier
Domain	scholarly article (Q13442814) (note: this should be moved to the property statements)
Allowed values	CRD\d+
Example	Selective serotonin reuptake inhibitors versus placebo in patients with major depressive disorder. A systematic review with meta-analysis and Trial Sequential Analysis (Q28736049) → CRD42013004420 Functional Neuroimaging Correlates of Aggression in Psychosis: A Systematic Review With Recommendations for Future Research (Q64236123) → CRD42016048579 A systematic review of shared decision making interventions in chronic conditions: a review protocol (Q26830041) → CRD42013005784
Source	https://www.crd.york.ac.uk/PROSPERO/
Formatter URL	http://www.crd.york.ac.uk/PROSPERO/display_record.asp?ID=$1
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 external identifier 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) Database reports/Constraint violations/P4294 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 5 Main statement 2 40% of uses Qualifier 3 60% of uses
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Single value: this property generally contains a single value. (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/P4294#Single value, SPARQL

Distinct values: this property likely contains a value that is different from all other items. (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/P4294#Unique value, SPARQL (every item), SPARQL (by value)

Format “CRD\d+”: value must be formatted using this pattern (PCRE syntax). (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/P4294#Format, 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/P4294#Entity types

Scope is as main value (Q54828448), as reference (Q54828450): 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/P4294#Scope, SPARQL