Description: Since 2005, training in IUD (intra-uterine device) insertion has been provided to 557 midwives in 283 health centers (HCs) with the support of the German Development Bank KfW in all Cambodian provinces. However, IUD prescription has remained low. The purpose of this study is to understand the factors from the provider side that could explain the low IUD prescription and to evaluate the effectiveness of the IUD insertion training.