You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Which of the following is not an indicator for disability? and explain in detail?
Pearl index is a measure of effectiveness of a contraceptive method. It is expressed as failure rate per 100 woman years and is not related to disability. Note: HALE - Health Adjusted Life Expectancy DALY - Disability Adjusted Life Years Ref: Park's Textbook of Preventive Medicine, 17th Edition, Pages 22, 351.