{
"package" : "hl7.terminology.r5@6.3.0",
"definition" : "The logarithmic normal distribution is used to transform skewed random variable X into a normally distributed random variable U = log X. The log-normal distribution can be specified with the properties mean m and standard deviation s. Note however that mean m and standard deviation s are the parameters of the raw value distribution, not the transformed parameters of the lognormal distribution that are conventionally referred to by the same letters. Those log-normal parameters mlog and slog relate to the mean m and standard deviation s of the data value through slog2 = log (s2/m2 + 1) and mlog = log m - slog2/2.",
"system" : "http://terminology.hl7.org/CodeSystem/v3-ProbabilityDistributionType",
"property" : [ {
"_uri" : "http://hl7.org/fhir/concept-properties#status",
"code" : "status",
"valueCode" : "active"
}, {
"_uri" : "http://terminology.hl7.org/CodeSystem/utg-concept-properties#v3-internal-id",
"code" : "internalId",
"valueCode" : "10750"
} ],
"codesystem" : "6b6f63e4-151d-5867-ab60-161768aa008f",
"concept_id" : "5c2b71d8-aff6-5b2a-b878-ded3c8ea10a5",
"ancestors" : {
"LN" : 0
},
"id" : "33fa2c0c-491b-4352-ae00-24f41fa14d26",
"code" : "LN",
"display" : "log-normal",
"version" : "3.0.0"
}