---
type: "search-params"
title: "ResearchStudy Search Parameters"
resource: "ResearchStudy"
---
# ResearchStudy Search Parameters

<a id="condition"></a>

## condition
**Description:** Condition being studied

**Type:** token

**Expression:** ResearchStudy.condition

**Path:** ResearchStudy.condition

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/ResearchStudy-category


<a id="date"></a>

## date
**Description:** When the study began and ended

**Type:** date

**Expression:** ResearchStudy.period

**Path:** ResearchStudy.period

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/ResearchStudy-date


<a id="focus-code"></a>

## focus-code
**Description:** Drugs, devices, etc. under study, as a code

**Type:** token

**Expression:** ResearchStudy.focus.concept

**Path:** ResearchStudy.focus.concept

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/ResearchStudy-focus-code


<a id="focus-reference"></a>

## focus-reference
**Description:** Drugs, devices, etc. under study, as a reference

**Type:** reference

**Expression:** ResearchStudy.focus.reference

**Path:** ResearchStudy.focus.reference

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/ResearchStudy-focus-reference


<a id="identifier"></a>

## identifier
**Description:** Business Identifier for study

**Type:** token

**Expression:** ResearchStudy.identifier

**Path:** ResearchStudy.identifier

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/ResearchStudy-identifier


<a id="keyword"></a>

## keyword
**Description:** Used to search for the study

**Type:** token

**Expression:** ResearchStudy.keyword

**Path:** ResearchStudy.keyword

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/ResearchStudy-keyword


<a id="region"></a>

## region
**Description:** Geographic area for the study

**Type:** token

**Expression:** ResearchStudy.region

**Path:** ResearchStudy.region

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/ResearchStudy-location


<a id="part-of"></a>

## part-of
**Description:** Part of larger study

**Type:** reference

**Expression:** ResearchStudy.partOf

**Path:** ResearchStudy.partOf

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/ResearchStudy-part-of


<a id="protocol"></a>

## protocol
**Description:** Steps followed in executing study

**Type:** reference

**Expression:** ResearchStudy.protocol

**Path:** ResearchStudy.protocol

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/ResearchStudy-protocol


<a id="recruitment-actual"></a>

## recruitment-actual
**Description:** Actual number of participants enrolled in study across all groups

**Type:** number

**Expression:** ResearchStudy.recruitment.actualNumber

**Path:** ResearchStudy.recruitment-actual

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/ResearchStudy-recruitment-actual


<a id="recruitment-target"></a>

## recruitment-target
**Description:** Target number of participants enrolled in study across all groups

**Type:** number

**Expression:** ResearchStudy.recruitment.targetNumber

**Path:** ResearchStudy.recruitment-target

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/ResearchStudy-recruitment-target


<a id="site"></a>

## site
**Description:** Facility where study activities are conducted

**Type:** reference

**Expression:** ResearchStudy.site

**Path:** ResearchStudy.site

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/ResearchStudy-site


<a id="status"></a>

## status
**Description:** active | active-but-not-recruiting | administratively-completed | approved | closed-to-accrual | closed-to-accrual-and-intervention | completed | disapproved | enrolling-by-invitation | in-review | not-yet-recruiting | recruiting | temporarily-closed-to-accrual | temporarily-closed-to-accrual-and-intervention | terminated | withdrawn

**Type:** token

**Expression:** ResearchStudy.status

**Path:** ResearchStudy.status

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/ResearchStudy-status


<a id="title"></a>

## title
**Description:** The human readable name of the research study

**Type:** string

**Expression:** ResearchStudy.title

**Path:** ResearchStudy.title

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/ResearchStudy-title


<a id="name"></a>

## name
**Description:** Name for this study

**Type:** string

**Expression:** ResearchStudy.name

**Path:** ResearchStudy.name

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/ResearchStudy-name


<a id="description"></a>

## description
**Description:** Detailed narrative of the study

**Type:** string

**Expression:** ResearchStudy.description

**Path:** ResearchStudy.description

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/ResearchStudy-description


<a id="phase"></a>

## phase
**Description:** The stage in the progression of a study

**Type:** token

**Expression:** ResearchStudy.phase

**Path:** ResearchStudy.phase

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/ResearchStudy-phase


<a id="classifier"></a>

## classifier
**Description:** Classification for the study

**Type:** token

**Expression:** ResearchStudy.classifier

**Path:** ResearchStudy.classifier

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/ResearchStudy-classifier


<a id="study-design"></a>

## study-design
**Description:** Classifications of the study design characteristics

**Type:** token

**Expression:** ResearchStudy.studyDesign

**Path:** ResearchStudy.studyDesign

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/ResearchStudy-study-design


<a id="objective-description"></a>

## objective-description
**Description:** Free text description of the objective of the study

**Type:** string

**Expression:** ResearchStudy.objective.description

**Path:** ResearchStudy.objective.description

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/ResearchStudy-objective-description


<a id="objective-type"></a>

## objective-type
**Description:** The kind of study objective

**Type:** token

**Expression:** ResearchStudy.objective.type

**Path:** ResearchStudy.objective.type

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/ResearchStudy-objective-type


<a id="eligibility"></a>

## eligibility
**Description:** Inclusion and exclusion criteria

**Type:** reference

**Expression:** ResearchStudy.recruitment.eligibility

**Path:** ResearchStudy.recruitment.eligibility

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/ResearchStudy-eligibility


<a id="progress-state"></a>

## progress-state
**Description:** Label for status or state

**Type:** token

**Expression:** ResearchStudy.progressStatus.state

**Path:** ResearchStudy.progressStatus.state

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/ResearchStudy-progress-state


<a id="progress-actual"></a>

## progress-actual
**Description:** Actual if true else anticipated

**Type:** token

**Expression:** ResearchStudy.progressStatus.actual

**Path:** ResearchStudy.progressStatus.actual

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/ResearchStudy-progress-actual


<a id="progress-period"></a>

## progress-period
**Description:** Date range

**Type:** date

**Expression:** ResearchStudy.progressStatus.period

**Path:** ResearchStudy.progressStatus.period

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/ResearchStudy-progress-period


<a id="progress-status-state-period"></a>

## progress-status-state-period
**Description:** Status of study by state and period

**Type:** composite

**Expression:** ResearchStudy.progressStatus

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/ResearchStudy-progress-status-state-period


<a id="progress-status-state-actual"></a>

## progress-status-state-actual
**Description:** Status of study by state and actual

**Type:** composite

**Expression:** ResearchStudy.progressStatus

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/ResearchStudy-progress-status-state-actual


<a id="progress-status-state-period-actual"></a>

## progress-status-state-period-actual
**Description:** Status of study by state, period and actual

**Type:** composite

**Expression:** ResearchStudy.progressStatus

**Standards Status:** normative

**URL:** http://hl7.org/fhir/build/SearchParameter/ResearchStudy-progress-status-state-period-actual