/* * Library: IMMZ.IND.37 Logic * Drop-out rate from the 1st dose of measles and rubella-containing vaccine to the 2nd dose * The percentage in the target population who received a 1st dose of measles and rubella-containing vaccine in the primary series but have not received the 2nd dose of measles and rubella-containing vaccine in the primary series (i.e. are past due for measles and rubella-containing vaccine 2nd dose) during the reporting period * * Numerator: Number of clients who received a 1st dose of measles and rubella-containing vaccine during the reporting period who should have received the 2nd dose of measles and rubella-containing vaccine during the reporting period but did not receive it * Numerator Computation: (COUNT of clients with an immunization event 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) - (COUNT of clients with an immunization event WHERE "Vaccine type"" = "Measles and rubella-containing vaccines" for the 2nd dose in the primary series AND "Date and time of vaccination" is during the reporting period) * Denominator: Number of clients in the target population who received dose 1 of measles and rubella-containing vaccine during the reporting period * Denominator Computation: COUNT clients with an immunization event WHERE "Vaccine type" = "Measles and rubella-containing vaccines" for a 1st dose in the primary series AND "Date and time of vaccination" is during the reporting period * * Disaggregation * - Administrative area * - Sex * - Age in years * - Age group (depending on schedule) * * References: WHO Immunization facility analysis guide (5) * * Annotations: – */ library IMMZIND37Logic 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 parameter "Measurement Period" Interval< Date > default Interval[@2025-01-01, @2025-12-31] /* * As defined by Member State */ define "Initial Population": true /* @denominator: Number of clients in the target population who received dose 1 of measles and rubella-containing vaccine during the reporting period @pseudocode: COUNT clients with an immunization event WHERE "Vaccine type" = "Measles and rubella-containing vaccines" for a 1st dose in the primary series AND "Date and time of vaccination" is during the reporting period @note: Updated to include those who have received the first dose and are due for the second during the measurement period */ define "Denominator": exists ( Elements . "Measles and Rubella Doses Administered to Patient" . getDose( '1' ) ) and Patient . birthDate + 15 months during "Measurement Period" /* @numerator: Number of clients who received a 1st dose of measles and rubella-containing vaccine during the reporting period who should have received the 2nd dose of measles and rubella-containing vaccine during the reporting period but did not receive it @pseudocode: (COUNT of clients with an immunization event 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) - (COUNT of clients with an immunization event WHERE "Vaccine type"" = "Measles and rubella-containing vaccines" for the 2nd dose in the primary series AND "Date and time of vaccination" is during the reporting period) @note: Only include those from the denominator that did not receive a measles/rubella 2nd dose during the measurement period. Those where the 2nd dose due date is during the period but have not received the 2nd dose. */ define "Numerator": "Denominator" and not exists ( Elements . "Measles and Rubella Doses Administered to Patient During Measurement Period" . getDose( '2' ) ) /* @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"