TABLE 1.

Data collection methods¹

Method	Description
Situation analysis
Review of journal articles, gray literature, program reports, and organizational norms	Revision of the current models, methods, and approaches used for training health personnel Revision of the organizational structure and internal procedures of IMSS-PROSPERA, Secretary of Health, and Sedesol
Formative research 50 semistructured interviews with health workers 32 structured observations of consultation for children <24 mo 8 focus groups with health workers	Assess health workers’ knowledge, attitudes, and practices related to promotion and counseling on IYCF and growth monitoring. Identify barriers to effective promotion at PHC. Understand organization of PHC, including provision of counseling services, roles and responsibilities of personnel, and training and supervision systems.
Feasibility study
Cross-sectional baseline and endline survey with 243 nurses, physicians, and health promoters 16 focus groups with nurses, physicians, health promoters, and nurse technicians/community volunteers (vocales) 4 in-depth interviews with health personnel at the first level of the training cascade	Assess changes in knowledge and perceptions of trainees on key EsIAN topics after the training. Assess health workers’ experience with the training, including key strengths and weaknesses of the training and recommendations for improvement. Assess experience with providing training to next level of the cascade.
Redesign and scale up
Assessment of learning abilities and technological capabilities Pre- and posttests Satisfaction survey for 851 trainees (level 1) and 94,026 trainees (level 2)	Assess trainees’ learning abilities and technological capabilities before training. Assess changes in knowledge and perceptions of trainees on key EsIAN topics after the training. Assess health providers’ experience with the training, including if they perceived it as useful and their recommendations for improvement.
Evaluation
Telephone survey with 1586 respondents at baseline and 796 at postintervention	Assess association between training and changes in knowledge of health workers.

¹EsIAN, Integrated Strategy for Attention to Nutrition; IMSS, Mexican Institute of Social Security; IYCF, infant and young child feeding; PHC, primary health care.