question: What is every percentage of overweight or obese adults when 12.4% of children and adolescents are obese?
answer: SELECT overweight__incl_obese__adults FROM table_18958648_1 WHERE obese_children_and_adolescents = "12.4%"
context: CREATE TABLE table_18958648_1 (overweight__incl_obese__adults VARCHAR, obese_children_and_adolescents VARCHAR)