/*
 * Library: IMMZ.IND.12 Logic
 * Immunization coverage for measles and rubella-containing vaccine, 1st dose
 * The percentage in the target population who have received a 1st dose of measles and rubella-containing vaccine during the reporting period
 * 
 * Numerator: Number of measles and rubella-containing vaccine doses (1st dose) administered through routine services during the reporting period
 * Numerator Computation: COUNT of immunization events WHERE "Vaccine type" = "Measles and rubella-containing vaccines" for the 1st dose in the primary series AND "Date and time of vaccination" is during the reporting period
 * Denominator: Number in target group
 * Denominator Computation: As defined by the Member States
 * 
 * Disaggregation
 *  - Administrative area
 *  - Sex
 *  - Age in years
 *  - Age group (depending on schedule)
 *
 * References: WHO Immunization facility analysis guide (5)
 *   WHO Handbook on immunization data (6)
 * 
 * Annotations: –
 */
library IMMZIND12Logic

using FHIR version '4.0.1'

include FHIRHelpers version '4.0.1'

include WHOCommon called WC

include IMMZCommon called Common
include IMMZConcepts called Concepts
include IMMZIndicatorElements called Elements

include IMMZD2DTMeaslesElements called Measles
include IMMZD2DTRubellaElements called Rubella

parameter "Measurement Period" Interval<Date> default Interval[@2025-01-01, @2025-12-31]

context Patient

/*
 * As defined by Member State
 */
define "Initial Population":
  true

/*
@denominator: Number in target group
@pseudocode: As defined by the Member States
*/
define "Denominator":
  true

/*
@numerator: Number of measles and rubella-containing vaccine doses (1st dose) administered through routine services during the reporting period
@pseudocode: COUNT of immunization events WHERE "Vaccine type" = "Measles and rubella-containing vaccines" for the 1st dose in the primary series AND "Date and time of vaccination" is during the reporting period
*/
define "Numerator":
  exists( Elements."Measles and Rubella Doses Administered to Patient During Measurement Period".getDose('1') )



/*
@disaggregation: Administrative area
                 Sex
                 Age in years
                 Age group (depending on schedule)
*/
define "Stratification 1":
	Elements."By Geographic Region Stratifier"

define "Stratification 2":
	Elements."By Administrative Gender Stratifier"

define "Stratification 3":
	Elements."Age Stratifier"

define "Stratification 4":
	Elements."Toddler By Age Stratifier"

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