PDA was first active in promoting family planning in urban and rural areas of Thailand, where knowledge of and access to such services were scarce. PDA recruited and trained respected members of local urban and rural neighbourhoods to distribute and provide information on affordable contraceptives directly to their communities. Other campaigns were tailored to the health of specific target groups such as factory workers, hill tribe villagers and adolescents. In total 12,000 volunteers plus several mobile health units distributed contraceptives to over 10,000 villages. Today PDA programs cover over one third of the country, helping to lower the national population growth rate from 3.2% to 1%.