(1). To determine if participation in the Halifax County Preterm Birth Prevention Project (HCPBPP) reduced the risk of preterm birth; (2). to evaluate the degree to which specific components of the HCPBPP contributed to preterm-birth risk reduction.
A nested case-control study was conducted among women residing in Halifax County who gave birth at the IWK Grace Health Centre during the final year of the HCPBPP. Cases, defined as women who delivered preterm (