It's not just older credit accounts that get all the attention. (veteransunited.com)
Many people look to close old credit accounts, perhaps to remove temptation or because it is no longer needed or used. (selflender.com)
It consists of factors such as age of oldest credit account, newest credit account, average of all accounts, types of accounts (mortgage, auto loans, etc), and last time each account was used. (creditsesame.com)