Journal article
Impact of state weights on national vaccination coverage estimates from household surveys in Nigeria
Abstract: National vaccination coverage estimates from household surveys are widely used in monitoring and planning of immunization programs. In Nigeria, survey-reported national coverage estimates have shown large fluctuations in the past few years. In this paper, we examine the impact of state-level survey weighting on Nigeria’s national vaccination coverage estimation. In particular, we focus three vaccination-related outcomes among children aged 12–23 months: the coverage of the third dose of diphtheria, pertussis, and tetanus vaccine (DPT3); the coverage of the first dose of measles-containing vaccine (MCV1); and the availability rate of home-based vaccination record (HBR). We compare the sample selection and weight assignment of three major survey programs in Nigeria, and show that considerable portions of the changes in survey-reported national coverage estimates can be explained by shifts in state-level weights. Our analysis demonstrates the importance of state weighting method in estimating aggregated national coverage figures and provides important context for interpreting changes in coverage estimates between surveys in the future.
Keywords: Vaccination coverage; Household surveys; Survey weight; DPT and MCV coverage; HBR availability; Nigeria
Authors
- Tracy Qi Dong
-
Dale A. Rhoda
View profile | More articles - Laina D. Mercer
Languages
- English
Publication year
2020
Journal
Vaccine
Volume
38
Issue
32
Type
Journal article
Categories
- Programme management
Countries
- Nigeria
Tags
- Coverage monitoring
WHO Regions
- African Region