How To Compute Standard Error For Odds Ratio
Contents |
on statistics Stata Journal Stata Press Stat/Transfer Gift Shop Purchase Order Stata Request a quote Purchasing FAQs Bookstore Stata Press books Books on Stata Books on statistics odds ratio confidence interval crosses 1 Stat/Transfer Stata Journal Gift Shop Training NetCourses Classroom and web On-site Video tutorials
Risk Ratio Confidence Interval
Third-party courses Support Updates Documentation Installation Guide FAQs Register Stata Technical services Policy Contact Publications Bookstore Stata Journal Stata how to calculate odds ratio in excel News Conferences and meetings Stata Conference Upcoming meetings Proceedings Email alerts Statalist The Stata Blog Web resources Author Support Program Installation Qualification Tool Disciplines Company StataCorp Contact us Hours of operation Announcements
Odds Ratio Confidence Interval P Value Calculator
Customer service Register Stata online Change registration Change address Subscribe to Stata News Subscribe to email alerts International resellers Careers Our sites Statalist The Stata Blog Stata Press Stata Journal Advanced search Site index Purchase Products Training Support Company >> Home >> Resources & support >> FAQs >> Standard errors, confidence intervals, and significance tests How are the standard errors and confidence confidence interval crosses 0 intervals computed for relative-risk ratios (RRRs) by mlogit? How are the standard errors and confidence intervals computed for odds ratios (ORs) by logistic? How are the standard errors and confidence intervals computed for incidence-rate ratios (IRRs) by poisson and nbreg? How are the standard errors and confidence intervals computed for hazard ratios (HRs) by stcox and streg? Title Standard errors, confidence intervals, and significance tests for ORs, HRs, IRRs, and RRRs Authors William Sribney, StataCorp Vince Wiggins, StataCorp Someone asked: How does Stata get the standard errors of the odds ratios reported by logistic and why do the reported confidence intervals not agree with a 95% confidence bound on the reported odds ratio using these standard errors? Likewise, why does the reported significance test of the odds ratio not agree with either a test of the odds ratio against 0 or a test against 1 using the reported standard error? Standard Errors The odds ratios (ORs), hazard ratios (HRs), incidence-rate ratios (IRRs), and relative-risk ratios (RRRs) are all just univariate transformations of the estimated betas for the logistic, survival, and multinomial logistic models. Using the odds ratio as an examp
Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of
Relative Risk Confidence Interval Calculator
this site About Us Learn more about Stack Overflow the company Business Learn
How To Report Odds Ratios And Confidence Intervals
more about hiring developers or posting ads with us Cross Validated Questions Tags Users Badges Unanswered Ask Question _ confidence interval for odds ratio logistic regression Cross Validated is a question and answer site for people interested in statistics, machine learning, data analysis, data mining, and data visualization. Join them; it only takes a minute: Sign up Here's https://www.stata.com/support/faqs/stat/2deltameth.html how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top How to calculate Standard Error of Odds Ratios? up vote 9 down vote favorite 3 I have two datasets from genome-wide association studies. The only information available is the odds ratio and the p-value for the first data set. For the second data http://stats.stackexchange.com/questions/10375/how-to-calculate-standard-error-of-odds-ratios/10380 set I have the Odds Ratio, p-value and allele frequencies (AFD= disease, AFC= controls) (e.g: 0.321). I'm trying to do a meta-analysis of these data but I don't have the effect size parameter to perform this. Is there a possibility to calculate the SE and OR confidence intervals for each of these data only using the info that is provided?? Thank you in advance example: Data available: Study SNP ID P OR Allele AFD AFC 1 rs12345 0.023 0.85 2 rs12345 0.014 0.91 C 0.32 0.25 With these data can I calculate the SE and CI95% OR ? Thanks meta-analysis genetics share|improve this question edited May 6 '11 at 13:45 chl♦ 37.5k6125243 asked May 5 '11 at 22:18 Bernabé Bustos Becerra 4814 add a comment| 1 Answer 1 active oldest votes up vote 15 down vote accepted You can calculate/approximate the standard errors via the p-values. First, convert the two-sided p-values into one-sided p-values by dividing them by 2. So you get $p = .0115$ and $p = .007$. Then convert these p-values to the corresponding z-values. For $p = .0115$, this is $z = -2.273$ and for $p = .007$,
ratio measures are performed on the natural log scale (see Chapter 9, Section 9.2.7). For a ratio confidence interval measure, such as a risk ratio, odds ratio or hazard ratio (which we will denote generically as RR here), first calculate lower limit = ln(lower confidence limit ratio confidence interval given for RR) upper limit = ln(upper confidence limit given for RR) intervention effect estimate = lnRR Then the formulae in Section 7.7.7.2 can be used. Note that the standard error refers to the log of the ratio measure. When using the generic inverse variance method in RevMan, the data should be entered on the natural log scale, that is as lnRR and the standard error of lnRR, as calculated here (see Chapter 9, Section 9.4.3).