Medicare Part D Prescription Drug Coverage Costs. Medicare Part D prescription drug coverage helps beneficiaries with the costs of their prescription medications. If you decide to enroll in Medicare Part D, some of your costs may include out-of-pocket expenses such as copayments, coinsurance, monthly premiums, and annual deductibles.
The average age of menarche, or first menstruation, in the United States is 12.88 years for Caucasian girls and 12.16 years for African American girls. A popular misconception is that menarche marks the beginning of puberty; in reality, menarche occurs later in puberty.
Myth: menarche means the end of growth is near. The reality is that the average gain in height after menarche is about 7 cm (3 inches), and it is even greater for girls who menstruate on the early side of normal.