An Introduction to the Grade of Confidence Used to Characterize Uncertainty Around the WHO and UNICEF Estimates of National Immunization Coverage December 4, 2013 Journal articles Home / Resources / An Introduction to the Grade of Confidence Used to Characterize Uncertainty Around the WHO and UNICEF Estimates of National Immunization Coverage Download Join our community Close Receive the latest updates from the UNICEF Data team Don’t miss out on our latest data Get insights based on your interests First name Last name Email address Sign up and download Error subscribing