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The problem
Intervention: Routine immunization services according to Kenya's Expanded Programme on Immunization schedule in urban informal settlement clinics
Who it was tested with: Children under 5 years old with verifiable immunization records (n=216) in two urban informal settlements (Viwandani and Korogocho) in Nairobi, Kenya.
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.
"We conducted an analytic cross-sectional study in Viwandani and Korogocho, randomly selected households with a child below 5 years, and administered questionnaires to mothers/caregivers. Timely vaccination was defined according to the Kenya Expanded Programme on Immunization schedule." The study measured vaccine timeliness by comparing recorded dates against defined windows from Kenya's national schedule but used a single time-point survey design without tracking vaccination over time or comparing different service delivery approaches.
This is a cross-sectional design without a comparison group, so causation cannot be established. Only children with verifiable immunization booklets were included (52%), potentially excluding those with poor access to services. Timeliness was verified from existing records rather than prospectively tracked.
Across countries and designs
11 studies · 7 countries
