The 2007 Fertility and Reproductive Health Survey (FRHS) is the fourth in a series of demographic surveys taken at five-year intervals since 1991 to measure trends in demographic and other indicators. The first demographic survey was Population Changes and Fertility Survey (PCFS) conducted in 1991 and the second and third surveys were FRHS conducted in 1997 and 2001 respectively.  All these surveys were conducted by the Department of Population with financial and technical assistance from UNFPA.