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Table 1 Characteristics and components of the pre-implementation and context-adapted interventions and the tailored implementation strategy

From: mHealth to improve implementation of TB contact investigation: a case study from Uganda

Characteristic

Standard of care intervention:

Context-adapted intervention:

Tailored implementation strategy:

“Household TB contact investigation”

“Home-based TB contact investigation”

“mHealth facilitation”

Actors

Clinic-based Health Care Workers

Community Health Workers

Mobile Health Tools

Targets of action

Persons with TB (to help reach contacts)

Persons with TB (to help reach contacts)

Community Health Workers

Household contacts of persons with TB

Household contacts of persons with TB

Household contacts of persons with TB

Actions

1. Enumerate contacts at home

1. Enumerate contacts at home

1. Digital fingerprint scanning to track contacts

2. Screen household contacts for TB at home

2. Screen household contacts for TB at home

2. Decision support to guide testing and referral

3. Evaluate contacts for TB in clinics

3. Evaluate contacts for TB at home

3. Automated-SMS reporting of TB test results

 

 a. Home-based sputum collection

 
 

 b. Home-based HIV-testing

 

Justification

Not applicable

1. Reduce anticipated stigma for clients

1. Reduce contacts lost to follow-up

 

2. Decongest clinic

2. Increase fidelity of screening and testing

 

3. Minimize client costs

3. Improve delivery of results to clients

 

 a. Increase completion of TB testing

 
 

 b. Increase completion of HIV testing

 

Temporality

Timeline not specified

Household visit within one week of TB diagnosis

TB test results sent by SMS ≤ 3d of collection

Dose

One household visit

One household visit

One SMS message with TB test results

Outcomes

 

Number of contacts identified

Reach among eligible clients

 

Number of contacts screened for TB

Feasibility, Acceptability, Appropriateness

 

Number of contacts evaluated for TB

Cost

 

Number of contacts tested for HIV

Fidelity

Yield of TB diagnoses

Yield of TB diagnoses

Context

  1. Column 1 lists the characteristics of a well-specified intervention/implementation strategy, as adapted from Proctor et al. [58]; Column 2 describes Household TB contact investigation as specified in Uganda in the pre-implementation phase; Column 3 describes Home-based TB contact investigation, the context-adapted form of the intervention; Column 4 describes mHealth Facilitation, the tailored implementation strategy
  2. In the randomized trial, Actions 1 and 2 (including Actions 1 and 2 of the tailored implementation strategy) were delivered to all households, while Actions 3 (including 3a, 3b) were randomly allocated according to either the standard of care intervention or to the context-adapted intervention plus the tailored implementation strategy
  3. Abbreviations: SMS Short messaging services, TB Tuberculosis