Table 2.

Baseline and endline survey questionnaires for the Optimizing the Health Extension Program intervention evaluation

Questionnaire modules	Content
Household module N = 6000	• Location of household using global positioning system (GPS) coordinates • Members of household • Characteristics of the house and assets a • Women of reproductive age • Birth history • Use of maternal and perinatal health services • Knowledge of child diseases and danger signs • Care seeking and treatment for child illness • Preventive behaviour
Health post module N = 200 Halth centre moduleb	• Location of health post and health centre using GPS coordinates • Facility-level preparedness to provide child health services • Data extracted from registers • Supportive supervision and mentorship from health centres to health posts
Health extension worker module c	• Knowledge on newborn and child health care • Training, supervision, mentorship • Services provided to newborns and children
Health centre staff module d	• Knowledge on newborn and child health care • Training, supervision • Services provided • Working conditions
Health provider assessment of the quality of care for a sick child module N = 800	• Observation and re-examination of Health Extension Workers’ assessment, classification, and treatment of sick children at health post
Women’s development army module N = 200	• Training • Knowledge • Activities in promoting maternal, newborn, and child health
Woreda contextual factors module N = 52	• Demography • Maternal, newborn and child health programs • District resources and infrastructure • Training and supervision activities, • Recent epidemics and natural disasters
Context Assessment for Community Health (COACH) module e N = 200	• Available resources, • Community engagement, • Monitoring services for action, • Sources of knowledge, • Commitment to work, • Work culture, • Leadership, • Informal payment

^a Asset ownership will be used to estimate relative socio-economic status, using an asset index based on principal components analysis

^b Some health posts are served by the same health centre hence the exact samples size can’t be determined

^c All the health extension workers in each health post will be interviewed. Due to the varying numbers of workers in health posts, the exact sample size can’t be determined

^d We will interview one staff per sampled health centre

^e Conducted at endline survey only with one HEW in each health post