Detailed result lists can be found on the "World Junior Athletics History" website.[1] An unofficial count yields the number of about 176 athletes from about 8 countries: Argentina (16), Brazil (34), Chile (18), Colombia (21), Panama (2), Peru (22), Uruguay (9), Venezuela (54).
Medal summary
Medal winners are published for men[2] and women[3]
Complete results can be found on the "World Junior Athletics History"
website.[1]