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.
What age is early menstruation? Menarche, a girlâs first period or menstrual cycle used to normally be after 13 years of age. According to pediatrics American girls menstruate nine months earlier that they did 20 years ago on average around 12 years of age.