The body mass index (BMI) is a value derived from the mass (weight) and height of an individual. The BMI is defined as the body mass divided by the square of the body height, and is universally expressed in units of kg/m2, resulting from mass in kilograms and height in meters. The BMI is an attempt to quantify the amount of tissue mass (muscle, fat, and bone) in an individual, and then categorize that person as underweight, normal weight, overweight, or obese based on that value. It is noted that health risks associated with BMI differ depending on the person's race, so the definition of overweight, obese, etc. may need to be adjusted based on the patient's race. - adapted from wikipedia.
This class represents an Observation Clinical Statement wherein the Body Mass Index has been Evaluated, which can be used in a variety of other models as if it were a datatype.
"BMI if calculated in the source system. Decimal precision is permissible." - PCORnet Common Data Model, Vital.Original_BMI

Attributes
«PQ» Quantity	value	The body mass index (BMI) is a value derived from the mass (weight) and height of an individual. The BMI is defined as the body mass (in kilograms) divided by the square of the body height (in meters), and is universally expressed in units of kg/m2. This property redefines the inherited Observation.value property so that it is of type Quantity rather than an Any. In addition, a constraint is added that sets the unit of measure to kg/m2. Note that while conceptually, BMI is a ratio (weight / height^2), we've modeled this as a quantity because there is a UCUM unit of kg/m2, and it is treated as a number.

Attributes inherited from  FHIM::ClinicalObservation::ObservationStatement

basedOn,  bodySite,  category,  componentObservation,  dataAbsentReason,  dateTime,  dateTimeIssued,  deltaFlag,  description,  deviceInstance,  evaluationProcedure,  exceptionValue,  interpretationEvent,  method,  multimedia,  observed,  observedCharacteristic,  referenceRange,  reliability,  resultStatus,  specimen,  value,  derivedFrom,  hasMember,  partOf

Attributes inherited from  FHIM::Common::ClinicalStatement

clinicalDataSource,  contentVersion,  contextCode,  encounter,  note,  recordStatus,  relatedClinicalInformation,  sourceRecordType,  sourceSystem,  subjectGroup,  subjectOfInformation,  subjectOfRecord,  temporalContext,  topicCode,  cosigned,  recorded,  signed,  verified

Attributes inherited from  FHIM::Common::InformationEntry

identifier

 value

Public «PQ» Quantity value

The body mass index (BMI) is a value derived from the mass (weight) and height of an individual. The BMI is defined as the body mass (in kilograms) divided by the square of the body height (in meters), and is universally expressed in units of kg/m2.
This property redefines the inherited Observation.value property so that it is of type Quantity rather than an Any. In addition, a constraint is added that sets the unit of measure to kg/m2. Note that while conceptually, BMI is a ratio (weight / height^2), we've modeled this as a quantity because there is a UCUM unit of kg/m2, and it is treated as a number.

Constraints:

Properties:

Aggregation	None
Alias
Association
Association End
Class	BodyMassIndexFinding
Datatype
Default
Default Value
Is Composite	false
Is Derived	false
Is Derived Union	false
Is Leaf	false
Is Ordered	false
Is Read Only	false
Is Static	false
Is Unique	true
Keywords	redefine
Lower	1
Lower Value	(1)
Multiplicity	1
Name	value
Name Expression
Namespace	BodyMassIndexFinding
Opposite
Owner	BodyMassIndexFinding
Owning Association
Owning Template Parameter
Qualified Name	FHIM::DetailedClinicalModels::BodyMassIndex::BodyMassIndexFinding::value
Stereotype
Template Parameter
Type	«PQ» Quantity
Upper	1
Upper Value	(1)
Visibility	Public