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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