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Osteoarthritis is the most common form of arthritis, affecting about 237 million people or 3.3% of the world's population, as of 2015. [4] [12] It becomes more common as people age. [1] Among those over 60 years old, about 10% of males and 18% of females are affected. [2] Osteoarthritis is the cause of about 2% of years lived with disability. [12]
Osteoarthritis typically affects the weight-bearing joints, such as the back, knee and hip. Unlike rheumatoid arthritis, osteoarthritis is most commonly a disease of the elderly. The strongest predictor of osteoarthritis is increased age, likely due to the declining ability of chondrocytes to maintain the structural integrity of cartilage. [69]
Quizlet's primary products include digital flash cards, matching games, practice electronic assessments, and live quizzes. In 2017, 1 in 2 high school students used Quizlet. [4] As of December 2021, Quizlet has over 500 million user-generated flashcard sets and more than 60 million active users. [5]
Each flashcard typically bears a question or definition on one side and an answer or target term on the other. Flashcards are often used to memorize vocabulary, historical dates, formulae or any subject matter that can be learned via a question-and-answer format. Flashcards can be virtual (part of a flashcard software), or physical.
UNITY TOWNSHIP, Pa. (KDKA) — The body of Elizabeth Pollard, the missing 64-year-old woman who fell through a sinkhole while looking for her cat in Unity Township, Pennsylvania, has been found ...
A correct answer with a card in Box 2 "promotes" that card to Box 3. If they make a mistake with a card in Box 2 or Box 3, it gets "demoted" to the first box, which forces the learner to study that card more often. The advantage of this method is that the learner can focus on the most difficult flashcards, which remain in the first few groups.
Donations to abortion funds and clinics have helped enable travel for people like Nekia. Last year, abortion funds provided more than $36 million in aid to those seeking abortions, according to ...
WASHINGTON (Reuters) -Republican U.S. Senator Rand Paul voiced opposition on Sunday to the idea of using the military to carry out mass deportations of people living in the country illegally after ...