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trends over time in the proportion of smokers with a recent quit attempt, proportion of ex-daily smokers who quit within the past year, and the proportion of smokers with a recent quit attempt using the following quit attempt methods: no support, used NRT, used quit smoking medication, asked doctor for help or advice to quit, referred to the Quitline by a doctor, called the Quitline, and/or used an app or text messaging service.
