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Table 2 Overview of process evaluation methods

From: Disentangling the effects of a multiple behaviour change intervention for diarrhoea control in Zambia: a theory-based process evaluation

Research Method or Data Source

Data Type

Respondents

Core Information Sought

Purpose of Information

Timing

Activity logs

Quantitative

NHC & Komboni Housewife implementers

Number of individuals from target population attending Forums and ORT Corner Sessions. Number of men, women and children attending Road Shows. Activities conducted, availability of supplies and challenges faced

Fidelity, dose delivered, reach

Throughout intervention

CIDRZ staff

Content and quality of delivery of Radio shows

Fidelity

Throughout intervention

Spot check field observations

Quantitative

CIDRZ staff

Content and quality of delivery and participant engagement, according to an observation checklist. Contextual information on delivery & receipt in clusters, including features of each site.

Fidelity, participant engagement, context

Throughout intervention

Semi-structured interviews

Qualitative

NHC & Komboni Housewife implementers

Successes and challenges of intervention delivery from perspective of the implementers

Recruitment strategies and challenges in each cluster (to enable comparison with the levels of reach achieved in that cluster)

Acceptability of intervention messages and activities

Fidelity, recruitment, context, acceptability, participant engagement & responses

Midway through intervention & 4–6 weeks post intervention

Creative Agency (DDB) and Activation Agency (EXP)

Reasons for any deviations from planned activities

Fidelity

Midway through intervention

Nurse-in-Charge at intervention clinics

Information on the (clinic) environment and work load of staff

Health Centre perspective on ORT Corner Sessions

Context, acceptability

4–6 weeks post intervention

Intervention recipients (pairs)

Comprehension of messages and emotional responses to the intervention. Acceptability of intervention messages and activities

Participant responses, acceptability

Throughout intervention

Intervention recipients

Retention of key messages and reflections on the intervention

Participant responses

4–6 weeks post intervention

Focus group discussions

Qualitative

Komboni Housewife implementers

Successes and challenges of intervention delivery from perspective of the implementers

Recruitment strategies and challenges in each cluster (to enable comparison with the levels of reach achieved in that cluster)

Data on delivery & receipt in clusters, including features of each site

Acceptability of intervention messages and activities

Fidelity, recruitment, context, acceptability, participant engagement & responses

4–6 weeks post intervention

Intervention recipients

Retention of key messages and reflections on the intervention. Reactions to gossip in relation to the target behaviours

Participant responses, mediators

4–6 weeks post intervention

Unexposed control arm participants

Reactions to gossip in relation to the target behaviours

Mediators

4–6 weeks post intervention

Household survey

Quantitative

Sample of individuals in intervention arm and control arm

Proportion of sample reporting attendance of each intervention component/listening to the radio show at least once in each intervention and control cluster. Recall and recognition of intervention concept, messages.

Quantitative capture of indicators relating to hypothesised behavioural determinants

Reach, participant responses, mediators

At baseline (mediators) & 4–6 weeks post intervention

Document review

Quantitative

Intervention Schedule Spreadsheet

Information on deviations from planned activities

Fidelity

4–6 weeks post intervention

  1. NHCs (Neighbourhood Health Committee volunteers) implemented the intervention at the clinics (ORT Corner Sessions), the hired actors (the Komboni Housewives) implemented the forums and road shows and were managed by EXP (an Activation Agency)