/**
* Library: HIV.IND.41 Logic
* Ref No: VER.5
* Short Name: ART coverage in breastfeeding mothers
*
* Definition: % of HIV-exposed breastfeeding infants whose mothers are receiving ART at 12 (and 24 months) postpartum
*
* Numerator: Number of HIV-exposed breastfeeding infants whose mothers are receiving ART at 12 months (and 24 months*) postpartum
* Numerator Calculation: COUNT of infants who are an "HIV-exposed infant or child" AND whose mothers are "Breastfeeding" 12 months after "Delivery date" AND mothers with "On ART"=True 12 months after "Delivery date" | | Also reported for 24 months after "Delivery date"
* Numerator Exclusions:
*
* Denominator: Number of HIV-exposed infants attending MNCH services for a 12-month visit (and 24-month visit or first visit after the end of breastfeeding)
* Denominator Calculation: COUNT of infants who are an "HIV-exposed infant or child" AND [(whose mothers attend a 12-month "Maternal and child health service visit") OR (first "Maternal and child health service visit" after "Delivery date" where mother is NOT "Breastfeeding")] | | Also reported for mothers attending 24-month "Maternal and child health service visit"
* Denominator Exclusions:
*
* Disaggregations:
* • Age (<15, 15–19, 20–24, 25+ years)
* • Timing of ART initiation (already on ART at first ANC visit, newly on ART during pregnancy or labour and delivery)
* • Cities and other administrative regions of epidemiologic importance
*
* Disaggregation Elements: Age | Timing of ART initiation | Breastfeeding at 24 months
*
* Numerator and Denominator Elements:
* Breastfeeding
* Delivery date
* HIV-exposed infant or child
* Maternal and child health service visit
* On ART
*
* Reference: Consolidated guidelines on person-centred HIV strategic information: strengthening routine data for impact. Geneva: World Health Organization; 2022
*
* Data Concepts:
* HIV.A.DE17: Age | Calculated age (number of years) of the client based on date of birth
* HIV.B.DE32: Breastfeeding | Infant is being breastfed by mother
* HIV.D.DE32: Breastfeeding | Client is giving infant breast milk
* HIV.D.DE38: On ART | Client is currently taking ART
* HIV.E.DE41: Timing of ART initiation | When the pregnant woman or mother initiated ART, for women living with HIV.
* HIV.E.DE42: Already on ART at first antenatal care visit | The pregnant woman was already on antiretroviral therapy (ART) at first antenatal care visit
* HIV.E.DE43: Newly on ART during pregnancy | The pregnant woman started ART during her pregnancy
* HIV.E.DE44: Newly on ART during labour and delivery | The woman started ART during labour and delivery
* HIV.E.DE46: Delivery date | Date on which the woman delivered
* HIV.E.DE112: HIV-exposed infant or child | Whether the infant or child was determined to have had HIV exposure
* HIV.E.DE173: Maternal and child health service visit | Maternal and child health service visit attended by an HIV-exposed infant
* HIV.E.DE174: 12-month visit | HIV-exposed infant attending MCH services for a 12-month visit
* HIV.E.DE175: 24-month visit | HIV-exposed infants attending MCH services for a 24-month visit
* HIV.E.DE176: First visit after the end of breastfeeding | HIV-exposed infant attending MCH services for a first visit after the end of breastfeeding
* HIV.H.DE47: On ART | Client is currently taking ART
* HIV.SRV.DE20: HIV-exposed infant or child | Whether the infant or child was determined to have had HIV exposure
*
* Additional Context
* - what it measures: This indicator measures the programme's ability to reduce the risk of transmission via breastfeeding (Prong 3 of the PMTCT strategy).
* - rationale: • In many countries the average breastfeeding period is 18–24 months. The long breastfeeding period represents an important risk period for HIV-exposed infants. | • Ensuring that HIV-positive mothers are retained on ART, especially during the breastfeeding period, is critical to sustaining the health of the mother and preventing infection of her infant.
* - method: For the numerator: Programme records (for example, PMTCT registers, ART registers). | | For the denominator: Programme records (for example, MCH service records)
*
* Suggested Scoring Method: proportion | http://hl7.org/fhir/us/cqfmeasures/StructureDefinition/proportion-measure-cqfm
*/
library HIVIND41Logic
// Included Libraries
using FHIR version '4.0.1'
include HIVCommon version '0.0.1' called HIC
include FHIRHelpers version '4.0.1'
include WHOCommon called WCom
// Indicator Definition
parameter "Measurement Period" Interval<Date> default Interval[@2023-01-01, @2023-01-30]
context Patient
/* Populations */
/*
*Initial Population
*/
define "Initial Population":
true
/**
* Numerator
*
* Definition: Number of HIV-exposed breastfeeding infants whose mothers are receiving ART at 12 months (and 24 months*) postpartum
* Calculation: COUNT of infants who are an "HIV-exposed infant or child" AND whose mothers are "Breastfeeding" 12 months after "Delivery date" AND mothers with "On ART"=True 12 months after "Delivery date" | | Also reported for 24 months after "Delivery date"
*/
define "Numerator":
true
/**
* Denominator
*
* Definition: Number of HIV-exposed infants attending MNCH services for a 12-month visit (and 24-month visit or first visit after the end of breastfeeding)
* Calculation: COUNT of infants who are an "HIV-exposed infant or child" AND [(whose mothers attend a 12-month "Maternal and child health service visit") OR (first "Maternal and child health service visit" after "Delivery date" where mother is NOT "Breastfeeding")] | | Also reported for mothers attending 24-month "Maternal and child health service visit"
*/
define "Denominator":
true
/* end Populations */
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