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The CNMPPI can be used to document changes in practice authority of CNMs. The increase in state CNMPPI scores and decrease in variance across states can be interpreted as indicating growth of professional authority and increasing consensus regarding the CNM role. The scoring system needs to be updated to reflect the current health systems environment and to include certified midwives and other midwives meeting the International Confederation of Midwives definition of a midwife. Applications of the CNMPPI to future research are discussed.

Implanon is a new implantable, progestin-only contraceptive which was approved in the United States in July 2006. Implanon is comprised of a single ethylene vinylacetate copolymer rod that is 4 cm long and 2 mm in diameter. It is inserted subdermally in the groove between the biceps and triceps of the nondominant arm. A literature review was conducted and side effects are discussed. Implanon offers promise as a high-efficacy, long-term contraceptive and can enhance the contraceptive options offered by the women's health care providers. Clinical trial data indicate that the device is both safe and effective.