The use of the p value is to determine statistical significance based on a cut off point(e.g 0.05). P values below 0.05 indicate statistical significance. The same conclusion is derivable from 95% CI around absolute risk reduction. If the 95% CI does not overlap the null value of 0, this indicate statistical significance at 0.05 level. Most statistical softwares produce p values for CI around ARD if needed. Interpretation of the data can be made without the p value .
thank you. Can you recommend some online calculators which will help to calculate p value for absolute risk reduction, as i don't find any with my current search method.
Thank you very much for the information. I am aware of this site. In fact, I used it for calculating OR and RR but what about ARR and p value. Using this site I am not able to calculate p value for Absolute risk reduction.
If you get Stata statistical software output for CONFIDENCE INTERVAL FOR RISK RATIO, the following values are displayed... RR, risk difference (the other name for ARD), chi square and p value of the data input. I hope this helps.
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