Statistics Help @ Talk Stats Forum - Biostatistics
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Epidemiology and biostatistics, public health research. GLM, logistic regression, survival analysis, clinical trials.enThu, 20 Jul 2017 12:08:04 GMTvBulletin60http://www.talkstats.com/images/misc/rss.pngStatistics Help @ Talk Stats Forum - Biostatistics
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<![CDATA[Online Biostatistics Course/Master's Degree]]>
http://www.talkstats.com/showthread.php/69900-Online-Biostatistics-Course-Master-s-Degree?goto=newpost
Thu, 20 Jul 2017 08:07:40 GMTHi everyone, I'll be glad if someone could recommend me some online Biostatistics Course or Master's Degree for beginner.

Thanks!
]]>Biostatisticsovallecchttp://www.talkstats.com/showthread.php/69900-Online-Biostatistics-Course-Master-s-DegreePatient-year Incidence rates comparisons and p value
http://www.talkstats.com/showthread.php/69892-Patient-year-Incidence-rates-comparisons-and-p-value?goto=newpost
Wed, 19 Jul 2017 09:43:06 GMTDear all,
I would like to statistically compare two incidence rates from two different groupes.
I found the Incidence rate difference (IRD)...Dear all,

I would like to statistically compare two incidence rates from two different groupes.
I found the Incidence rate difference (IRD) formula from "Sahai and Kurshid, 1996".

My question is :
When the Chi-square related the IRD is calculated, how can I estimate the p value. In their example, Chi-square = 11.678635 P = .0006
How can I find .0006 from this Chi square. The number of degree of freedom is not detailed in the formula.

Thanks for your help!!

Yedid
]]>Biostatisticsdidyehttp://www.talkstats.com/showthread.php/69892-Patient-year-Incidence-rates-comparisons-and-p-valueCritiquing a Network Meta-analysis: Interpreting inconsistency
http://www.talkstats.com/showthread.php/69890-Critiquing-a-Network-Meta-analysis-Interpreting-inconsistency?goto=newpost
Tue, 18 Jul 2017 19:18:47 GMTHi all. I'm a non-statistician trying to critique a network meta-analysis on a group of migraine medications called triptans (PDF link). The statistics is a bit over my head so I'm hoping you kind folk can help. Not sure what happened with my last post but I'll try again..

I'm struggling with how they're assessing inconsistency: "We also plotted the posterior mean deviance of the individual data points in the inconsistency model against their posterior mean deviance in the consistency model to identify any loops where inconsistency is present."

I'm not entirely sure what this means. What is a posterior mean deviance? They report inconsistency for 2 of their outcomes. A plot for one of their outcomes is here:

Correct me if I'm wrong. Does this mean that the circled outliers indicate that the direct and indirect estimates for these data points do not agree and therefore there is some invalidity in the pooled estimate? What would it mean if the outliers fell above the diagonal line?

I've found some references on this topic but they're a bit technical that I'm having a tough time understanding.