Primary sources of data can include different categories of people including primary and secondary duty bearers (parents, service providers, community leaders, civil society, policy makers, local authorities) and rights holders (targeted girl and boy children).

Secondary sources of data would include existing statistics and documents (census data, national statistics, global data bases on child welfare, CRC State Party or Alternative reports, CRC Committee Concluding Observations, special studies commissioned by other development actors, academic research, etc).