Enum: RateDenominatorEnum

What a Prevalence record's rate is a rate of — the denominator its numerator is divided by. Together with measure_type this pins the dimension of rate_per_100000, which is otherwise ambiguous: a point prevalence of 5.0 is a dimensionless proportion of a population, while an annual incidence of 5.0 is 5 per 100,000 per year (dimension time^-1). Records that omit the slot fall back to the denominator implied by measure_type: POPULATION for the prevalence measures and for CARRIER_FREQUENCY, LIVE_BIRTHS for BIRTH_PREVALENCE. ANNUAL_INCIDENCE has deliberately NO fallback — a published "annual incidence per 100,000" is usually computed against a mid-year population (POPULATION_PER_YEAR) but person-year denominators are standard in cohort studies, and the two are not interchangeable unless the population is stable. Neither choice is right often enough to assume, and the wrong one would silently assert a dimension for every legacy incidence record, none of which were migrated with denominator information. Treat an incidence record with no rate_denominator as undetermined, and set the slot explicitly on any incidence record you write. (Counts as of the decision are in design-decisions §8; they are deliberately not repeated here, since a schema description outlives any KB snapshot.)

URI: dismech:enum/RateDenominatorEnum

Permissible Values

Value	Meaning	Description	Additional Info
POPULATION	None	Whatever measure_type counts, per 100,000 people in the stated population —...	Title: Per population
LIVE_BIRTHS	None	Whatever measure_type counts, per 100,000 live births (or births)	Title: Per live births
PERSON_YEARS	None	New cases per 100,000 person-years of observation	Title: Per person-years
POPULATION_PER_YEAR	None	New cases per 100,000 population per year, where the source reports an annual...	Title: Per population per year

Slots

Name	Description
rate_denominator	What rate_per_100000 (and rate_low/rate_high) is a rate of

Identifier and Mapping Information

Schema Source

• from schema: https://w3id.org/monarch-initiative/dismech

LinkML Source

name: RateDenominatorEnum
description: 'What a Prevalence record''s rate is a rate *of* — the denominator its
  numerator is divided by. Together with `measure_type` this pins the dimension of
  `rate_per_100000`, which is otherwise ambiguous: a point prevalence of 5.0 is a
  dimensionless proportion of a population, while an annual incidence of 5.0 is 5
  per 100,000 per year (dimension time^-1). Records that omit the slot fall back to
  the denominator implied by `measure_type`: POPULATION for the prevalence measures
  and for CARRIER_FREQUENCY, LIVE_BIRTHS for BIRTH_PREVALENCE. ANNUAL_INCIDENCE has
  deliberately NO fallback — a published "annual incidence per 100,000" is usually
  computed against a mid-year population (POPULATION_PER_YEAR) but person-year denominators
  are standard in cohort studies, and the two are not interchangeable unless the population
  is stable. Neither choice is right often enough to assume, and the wrong one would
  silently assert a dimension for every legacy incidence record, none of which were
  migrated with denominator information. Treat an incidence record with no `rate_denominator`
  as undetermined, and set the slot explicitly on any incidence record you write.
  (Counts as of the decision are in design-decisions §8; they are deliberately not
  repeated here, since a schema description outlives any KB snapshot.)'
from_schema: https://w3id.org/monarch-initiative/dismech
rank: 1000
permissible_values:
  POPULATION:
    text: POPULATION
    description: Whatever `measure_type` counts, per 100,000 people in the stated
      population — affected individuals for a prevalence, carriers for a carrier frequency.
      A dimensionless proportion; the denominator for point, period, and lifetime
      prevalence, and for carrier frequency.
    title: Per population
  LIVE_BIRTHS:
    text: LIVE_BIRTHS
    description: Whatever `measure_type` counts, per 100,000 live births (or births).
      A birth-cohort proportion, not a per-year rate; the denominator for birth prevalence
      and for predicted per-birth incidence catalogues.
    title: Per live births
  PERSON_YEARS:
    text: PERSON_YEARS
    description: New cases per 100,000 person-years of observation. A true rate with
      dimension time^-1; never directly comparable with a prevalence proportion.
    title: Per person-years
  POPULATION_PER_YEAR:
    text: POPULATION_PER_YEAR
    description: New cases per 100,000 population per year, where the source reports
      an annual rate against a mid-period population rather than accumulated person-time.
      Distinguished from PERSON_YEARS because the two are only interchangeable when
      the population is stable over the interval.
    title: Per population per year