They found that 2.3 % had generalized EOP and 4.2 % had localized EOP .
Albandar 2002 examined 690 school attendees aged 12 -- 25 years .
school attendees found that 2.3 % had generalized EOP and 4.2 % had localized EOP .
Albandar 2002 examined 690 school attendees aged 12 -- 25 years .