in viet nam the central highlands with their diverse ethnic minority population show the lowest cpr in the country teerawichitchainan unfpa supply and demand side barriers hampering access and use of contraceptives among disadvantaged groups are many such as costs distance to service delivery points and lack of information and knowledge as well as cultural and social values sdortino according to estimates in south and southeast asia in the period per cent of married women of reproductive age had an unmet need for contraception both for spacing and limiting births