Table 1. PICO used for literature search.

Population	Children <5y in Sub-Saharan Africa
Exposure Groups and Comparison	Distance to health facility, SE factors, maternal education, age of child, age of mother, gender, transport cost, transport availability, transport time, number of siblings, death of mother, death of sibling, seasonality
Outcome	Child mortality or Decreased healthcare utilization or Delayed presentation or Severe illness at presentation