Skip to main content

Table 4 SCOPE-PP Outcomes, Measures, Data Sources, and Timing (Aims 1 and 2)

From: Stepped care to optimize pre-exposure prophylaxis (PrEP) effectiveness in pregnant and postpartum women (SCOPE-PP) in South Africa: a randomized control trial

Outcomes

Measures

Data Sources

Follow-up timing

Aim 1: Efficacy of SCOPE-PP (Primary Outcomes)

 Efficacy of SCOPE-PP

Perfect Persistence: Persistence on PrEP (%, time on PrEP adherent). Perfect persistence in postpartum = > 950 fmol/punch in DBS TFV-DP), by study arm

DBS TDF-DP

RCT 1: 6 months

RCT 2: 15 months postpartum

Prevention-Effective Persistence: Persistence on PrEP when sexually active (in postpartum women = > 950 fmol/punch in DBS TFV-DP), by study arm

DBS TDF-DP

RCT 1: 6 months

RCT 2: 15 months postpartum

Self-reported persistence: self-reported measures of PrEP use and pill counts over the phone

Self-reported PrEP persistence &pill count

Quarterly

Secondary outcomes: HIV incidence (maternal and infant), adverse events and IPV

RedCap clinical data

Monthly

Nested implementation science evaluation of SCOPE-PP acceptability, feasibility using CFIR

 Ickovic’ and Meisler’s Conceptual Factors

Evaluate factors associated with PrEP persistence in conceptual model: individual level (including partner PrEP support), facility level, HIV level (partner HIV testing & serostatus)

Quantitative surveys at each visit

Baseline, 1 month, 6 months, 12 months postpartum

 Acceptability and uptake of intervention

Organizational, providers, woman and partner views on acceptability of SCOPE-PP including HIVST, urine TFV testing for persistence monitoring, and differentiated care

Mixed methods

At 6 months & 12 months follow-up of all participants (survey); IDIs in 20 providers working with PrEP, 30 participants & 30 partners

 Feasibility of intervention

Organizational, providers, woman and partner views on feasibility & scalability of implementation of SCOPE-PP

Mixed methods surveys

Aim 2: Evaluate cost effectiveness of SCOPE-PP

 Incremental cost of Scope-PP

Based on micro-costing, evaluate incremental cost per participant of SCOPE-PP from baseline to 6, 12 and 15 months postpartum by trial step

Quantitative surveys at each visit

RCT 1: 6 months

RCT 2: 15 months postpartum

 Incremental cost per improved PrEP continuation and persistence

Using trial-based cost-effectiveness analysis, evaluate incremental cost per improved PrEP continuation and persistence at 6, 12 and 15 months postpartum for SCOPE-PP (integrating step 1 and step 2 trials)

Quantitative surveys at each visit

RCT 1: 6 months

RCT 2: 15 months postpartum

 Incremental cost per DALY averted

Using model-based cost-utility analysis, evaluate incremental lifetime cost and DALYs averted for SCOPE-PP and assess value for money

N/A

N/A (model-based analysis)

  1. SCOPE-PP Stepped care to optimize pre-exposure prophylaxis (PrEP) effectiveness in pregnant and postpartum women, DALY disability adjusted life year, CFIR Consolidated Framework for Implementation Research, PrEP pre-exposure prophylaxis, HIVST HIV self-testing, TFV-DP tenofovir diphosphate