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The problem
Intervention: Analysis of spatial accessibility to immunising health facilities and its effect on vaccination coverage using geographic information systems and travel time modelling
Who it was tested with: Nationally representative sample of households with children from Kenya Demographic and Health Survey 2014, aggregated at survey cluster level.
Experience from people who deliver programmes: stories, case studies and lessons learned. Valuable for understanding how and why, and for spotting what to test next, but not a measure of effect.
"Data from a nationally representative cross-sectional survey (KDHS 2014), was used to estimate the effect of mean travel time at survey cluster units for both fully immunised status and third dose of diphtheria-tetanus-pertussis (DPT3) vaccine using multi-level logistic regression models." The study demonstrates that spatial accessibility, when measured objectively through travel time modelling and linked to population-level vaccination outcomes through regression analysis, is a significant determinant of immunisation uptake in Kenya.
Cross-sectional design prevents causal inference. Spatial accessibility model uses generalized travel assumptions that may not capture context-specific barriers. The analysis is at cluster level rather than individual level.
Across countries and designs
1 study · 1 country
