My question is rather simple but it seems that statisticians have different views about it.. If a bar chart shows the percentage of children under 5 that had fever in the past 2 weeks by country.. The title will be: "Children under 5 with fever in the past 2 weeks, by country, 2017" The x axis title will be the name of the countries The y axis title will be (for me): "% of children under 5"..as it is the denominator! But some people will write: "% of febrile children under 5" (which for me is not the title of the axis going from 0 to 100...the colored bar will be febrile children, the rest of the bar which is not colored are children who did not have fever...)
What is the correct standard way of labeling the y axis?