Ruth Simmons is Professor, Department of Health Behavior and Health Education, School of Public Health, University of Michigan, Ann Arbor.; Ayaga Agula Bawah is Demographer, Navrongo Health Research Centre, Upper East Region, Ghana.; Patricia Akweongo is Research Assistant, Navrongo Health Research Centre, Upper East Region, Ghana.; James F. Phillips is Senior Associate, Policy Research Division, Population Council. (Blackwell Publishing Ltd., 1999-03)