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 Natural method of contraception is most effective? and explain in detail?
Ans. c (Symptothermic method) (Ref. Park's textbook of PSM 22nd/403, 404)CONTRACEPTIVE METHODS# SPACING : Barrier methods, -Intrauterine devices, -Hormonal, -Postconceptional, Miscellaneous# Abstinence# Coitus interruptus# Safe period/Rhythm method/Calendar method/Ogino method# Natural family planning- Basal body temperature- Cervical mucus (Billing's method/ovulation method)- Symptothermic (combination of temperature, cervical mucus, and calendar technique)# TERMINAL: -Male sterilization and -Female sterilizationDrawbacks of the Calendar Method of Contraception# If cycle is irregular, it is difficult to predict the safe period.# It is possible only for use by educated and responsible couples with high motivation and cooperation.# Compulsory abstinence of sexual intercourse for nearly 1/2 of every month is required (programmed sex).# It has high failure rate up to 10 per 100 woman years.# It is applicable during the postnatal period.# Ectopic pregnancies and embryonic abnormalities have been reported as result of safe period method use.