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(iv) The methodology used to collect or process data should be fully documented and should include: study design, sampling procedures, materials used (e.g., questionnaire, and interviewer's manual), procedures used to collect or process data, methods or procedures used to control for unbiased estimates, and procedures used to correct for nonresponse

"A complex blend that changes character as you smoke through the bowl

Ionization smoke detectors are more responsive to flaming fires with smaller smoke particles

The results also showed young people in the UK were less likely to believe vaping is addictive (74%) or harmful (67%), compared to those in Australia (87% and 83% respectively), where susceptibility was lowest

Current smoking was assessed overall and by sex, age, race/ethnicity, education, poverty status, U.S