Why are some RR confidence intervals narrow, e.g., delayed healing, whereas othe
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Question
Why are some RR confidence intervals narrow, e.g., delayed healing, whereas others are very wide, e.g. pseudoarthrosis and nerve injury?
What complications are smokers at a statistically significant increase for compared to nonsmokers? Why?
Word File Edit View Insert Format Font Tools Table Window Help 0 m 63% sat 8:46 PM QOE CH 8 Questions SP17.docx 100% . Search in Document Home,/ Format Picture Layout Document Elements Tables | Charts | SmartArt Review Adjust Picture Styles Arrange Sizo IL Reorder. 1-Align, Border Group. e Rotate , 3.24-E · 24: , LI Height: Remove Background Crop |: Corrections Recclor Filters Reset Effects+ Transparency Position Wrap Text width: 5.65" Scientific Inquiry Chapter 8 Worksheet Name Table 3. Complications in 200 patients operated on by HCO Smokers n=34 14 Nonsmokers n= 166 Relative risk (RR) (95% CI)" Delayed healingb 25 27 (1.5-4.7) OSeptic arthritis 2.4 (0.1-34) 3.3 (0.4-23) 0 (1.0-84) 1.6 (0.1-17) Deep venous thrombosis 3 Nerve injury a (95% CI )= 95% confidence interval Includes 5 patients who developed pseudoarthrosis after removal of external fixation. 7. What complication are Nonsmokers more likely to experience? 8, why are some RR confidence intervals narrow, eg., delayed healing, whereas others are very wide, e.g. pseudoarthrosis and nerve injury? 9. What complications are smokers at a statistically significant increase for compared to nonsmokers? Why? Print Layout View Sec 1 Pages: 3015 | Words: 1 of 1088 100%Explanation / Answer
1. Complication that more likely to experiance: Actually none of complication is more likely to be experienced by the non-smoker. As no complication has confidence interval inside (0,1).
2. Because there's more data point in that category which reduces standard error and hence confidence region is small.
3. Complications that smokers are more likely to experience:
These complication has CI that does not contain 1. So at 5% level of significance, we cam say that there is higher chance of experiencing the complication by smokers. So these complications are statistically significant for smokers
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