Our finding that one-third of adolescents not always using condoms had multiple partners is consistent with the studies of Kelley et al.. and Lescano et al.,who found that 35% of sexually active teens had more than one partner. And the high proportion we found among vocational college students is consistent with the Japanese study. Our study also found a fourfold higher rate of multiple partners among males than among females. This finding is consistent with the studies from Haiti and South African