Economics is a study of man in the ordinary business of life. It enquires how he gets his income and how he uses it. Thus, it is on the one side, the study of wealth and on the other and more important side, a part of the study of man.
In developed countries, an increase in the average age of the gravida has been documented. The mean age of primiparous women in Austria rose from 25 years in 1991 to 28 years in 2008. In Germany in 2006, most gravidas were between the ages of 30 and 34 years whereas in the 1970s, most babies were born to women aged 20â24 years.
â¢ One in nine people age 65 and older (11 percent) has Alzheimerâs disease. â¢ About one-third of people age 85 and older (32 percent) have Alzheimerâs disease. â¢ Of those with Alzheimerâs disease, the vast majority (81 percent) are age 75 or older. An estimated 4 percent are under age 65, 15 percent are 65 to 74, 44 percent are 75 to 84, and 37 percent are 85 or older.