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Table 3 Process evaluation objectives, data collection methods and indicators

From: Effectiveness of a nutrition education package in improving feeding practices, dietary adequacy and growth of infants and young children in rural Tanzania: rationale, design and methods of a cluster randomised trial

Objectives and data sources

Description of process indicators

Characteristic of process indicator

Assess whether the intervention activities are implemented as planned

Activity logs

Number of taught modules and sessions held with nutrition counsellors

Fidelity

Number of education and counselling sessions and taught lessons held with mothers

Number of reading resources distributed to targeted groups

Number of home visits conducted by nutrition counsellors

Number of sensitisation meetings held with family members

Number of sensitisation meetings held with health facility staff

Supervisory reports

Review of counsellors’ workbooks for completeness, validity of documented information, referrals, appointments kept or missed

Fidelity and dose delivered

Registration forms

Number of community-based nutrition counsellors trained

Fidelity

Number of health facility staff sensitised

Pre- and post-test scores

Performance of nutrition counsellors in knowledge and skills gained during training

Fidelity and dose delivered

Evaluation forms

Quality of training sessions (adequacy of delivery methods, time allocated to sessions, usefulness of materials and field practice, attitude to training)

Structured observations

Nutrition counsellor’s skills during home visits on interpersonal skills, use of reading resources, problem-solving, confidence in counselling mothers

Evaluate the extent to which the intervention reaches the intended mothers and families

Activity logs

Number of recruited infants in intervention and control villages. Number dropped out. Reasons for dropping out

Reach (participation rate)

Attendance records

Number of mothers attending each education and counselling session (plus cooking demonstration)

Number of family members represented in sensitisation meetings

Number of mothers visited/attended during home visits

Determine the degree to which targeted mothers are exposed to intervention components and extent to which they use intervention resources

Attendance records

Number of mothers attending each education session

Dose received (exposure)

Number of mothers with information booklets

Structured observations

Observation of mothers’ attentiveness, interest/keen (e.g. asked/answered questions, give examples) during education and counselling sessions

Observation of mothers’ feeding style (e.g. responsive feeding) during cooking demonstration sessions

Amount of meal consumed by infants at cooking demonstration sessions

Semi-structured interviews

Number of mothers who could recall (spontaneously and/or prompted) key behaviours learned in education sessions and home visits

Number of mothers who could recall (spontaneously and/or prompted) messages contained in information booklet

Semi-structured interviews

Mothers’ perception on usefulness and preference (by ranking) of intervention aspects (education sessions, sensitisation meetings, home visits, booklet).

Dose received (satisfaction)

Mothers’ level of satisfaction with counsellors’ services

Investigate setting into which intervention is being implemented that may influence intervention effectiveness

Semi-structured interviews

Interviews with nutrition counsellors about any ongoing interventions (e.g. competing programmes), perception regarding intervention delivery, strengths, challenges, and suggestions for improvement

Context, facilitators, barriers, contamination

Interviews with village and sub-village leaders about village profile during baseline

Structured interviews

Interviews with residence in-charge of health centre on presence (and number) or absence of health staff who attended sensitisation meetings

Structured observations

Observation of health facility staff conducting health education sessions at the facility in intervention and control villages