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Table 4 SAIA-SCALE effectiveness outcome measures

From: Scaling-up the Systems Analysis and Improvement Approach for prevention of mother-to-child HIV transmission in Mozambique (SAIA-SCALE): a stepped-wedge cluster randomized trial

Outcome Definition (numerator/denominator) Source
Process measures
 Maternal viral load assessment #women tested for viral suppression within 1 month of delivery/
#women newly or previously on ART (excluding those lost to follow-up)
ANC
MW
PPC
 Early infant diagnosis (EID) by 8 weeks #infants tested for HIV by PCR within 8 weeks/
#infants presenting to care within 8 weeks (excluding those lost to follow-up)
CCR
Individual-level measures
 Maternal retention in care at 6 months post ART initiation Woman retained in care (picked up 6-month pharmacy refill within 15 days of scheduled pickup)/
Enrolled women
ANC
PPC
 Facility delivery Woman’s infant delivered in the study facility/
Anticipated deliveries
ANC
MW
 Maternal ART adherence > 90% (medication possession ratio) #ART supply days picked up through 3 and 6 months post ART initiation/
#days in 3- and 6-month period
ANC
PPC
 Viral load suppression at 1 month post delivery Undetectable viral load (<20 copies/mL)/
Viral load samples drawn within 1 month of delivery
PPC
 Mother-to-child HIV transmission rates at 6 months postpartum Infant tested HIV-positive by 6 months postpartum/
Infants tested for HIV
CCR
  1. Register service location for data abstraction: ANC antenatal care, MW maternity ward, PPC postpartum care, CCR at risk child care