Introduction This report is designed to answer the question "does smoking have an effect of air exhaled (FEV1) for children aged 8-16 years?" It is of interest as we know that smoking can cause many problems for people such as lung cancer. If smoking is affecting their breathing capacity it is important to know how. Methods The subjects in the study are children aged 8-16. The determinants are whether children smoke or not, the outcome …showed first 75 words of 286 total…

…showed last 75 words of 286 total…levels in smokers. The median is also higher (3.104 compared to 2.608). The 95% confidence intervals show that the mean of FEV1 levels is also higher in smokers (3.07 compared to 2.67). The scatter plot shows the positive relationship with smoking and FEV1 levels. Conclusion In conclusion there is a relationship between FEV1 levels and smoking. Smokers can exhale more in the first second of breath than non-smokers, which is a surprising result considering the known side effects of smoking