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Sample size calculations were based on preliminary Dyspnoea-12 score differences with an anticipated effect size of d=0.5, derived from preliminary data and previous literature on respiratory symptoms in young adult populations 16,17 , alpha level of 0.05, and power of 1-=0.90, accounting for a 10% attrition rate, yielding a requirement of approximately 60 participants per group

Findings indicated that Australian smokers were significantly more likely to report that smoking causes blindness compared to smokers in countries where there were no cigarette health warnings about blindness (Canada, the United Kingdom, and the United States) (Ref

He was about seventy years old, toothless, dressed in baggy, monochrome clothes

March 6, 1991