In 1977, the International Centre for Diarrhroeal Disease Research, Bangladesh, initiated an experimental family planning and maternal and child health program in the religiously conservative Matlab area, which included 149 villages with a total population of 180,000. Initially, community health workers made regular home visits to married women in the villages and offered them a choice of family planning methods. Over time, the program expanded to include other cost-effective interventions, such as immunizations, to improve family health.
Shareen Joshi and T. Paul Schultz used data collected through the first twenty years of the program (1977-1996) to examine the effects of long-term investment in family planning and maternal and child health in Matlab. They found that families in communities where the program was implemented became wealthier and healthier than families who lived in other communities that were similar when the Matlab program was begun.