Why is Stata taking forever to give results?

Hi, I am running an event study code in stata. It has loops in it. It is taking forever to give me results. Last time I ran the same code on same data (but not winsorized) it gave me results in...

06 July 2018 8,245 0 View

Can someone help me with stata commands?

Why would the following commands work only for cross sectional regressions and not work with panel regressions in Stata? Vif (to check multicolinearity) Robust (to run robust regression) Hettest...

06 July 2018 2,300 4 View

What is pseudo r2?

When I run quantile regression instead of r2 Stata gives pseudo r2. Is pseudo r2 something formal(not ad hoc) and can I report it in my PhD thesis?

01 February 2018 2,819 10 View

Why median regression (quantile regression) results wont display f statitics in stata?

I just ran a median regression in stata and it doesnt show the f statistics of the model. Why is this so?

01 February 2018 6,261 6 View

Can r2 be as high as 0.60 in cross sectional data?

I am running cross sectional data analysis and my r2 is as high as 0.60. I have never gotten such a high r2 so curious if I am not doing anything wrong..Can you tell me if this is fine?

01 February 2018 1,561 4 View

Why is stata not giving me the f statistics for the time fixed effects regression when i use the clustered standard error option ?

why is stata not giving me the f statistics for the time fixed effects regression when i use the clustered standard error option ? why is the f statistics blank?

01 February 2018 7,614 3 View

Regarding sample selection?

hi, I know how to control for sample selection bias when doing a regression. But what I dont know is that do we have to deal with sample selection problem when we are comparing the means of two...

10 November 2017 4,443 4 View

Does SDC platinum include firms listed on NYSE and NASDAQ both?

01 February 2017 1,618 2 View

What does pooled cross sectional regression mean?

hi I am reading this article by a researcher who is using the term 'pooled cross sectional regression' again and again. I am confused. I know that when we have panel data we can either run a fixed...

08 September 2016 516 1 View

Can i get helpp with the gsreg command in stata?

hi, Can somebody do the gsreg command for me in stata? If I provide you the data? my computer would take a couple of weeks do it that is why I am requesting . kind regards, Saadia

06 July 2016 4,239 2 View

How to classify strictly upper triangular matrices by similarity?

Let F be a field. Consider U, the set of n times n strictly upper triangular matrices in F. For X, Y in U, we call them similar if there exists some S, which is non-degenerate and upper...

01 March 2021 2,957 8 View

Is CD44 degraded in lysosome together with hyaluronan after CD44 mediated endocytosis of hyaluronic acid?

Also when RHAMM binds hyaluronic acid, they get internalized, will RHAMM also be degraded? Or both CD44 and RHAMM will be transferred back to the cell membrane? Asking for breast cancer cell line...

01 March 2021 8,169 2 View

Why is the sum of the elements in a row in a Q matrix equal to zero?

When explaining substitution models, the substitutions are expressed as Q matrix. Why is the sum of the elements in a row zero?

28 February 2021 3,864 3 View

Distribution of particles in metal matrix?

How would define the "good" and "poor" distribution of particles within the matrix. Is there a quantitative solution to assess the distribution of the particles, which then having denotation of...

28 February 2021 7,397 8 View

How to find a correlation between coordinates in a curvilinear coordinate system?

Hello. I have a skewed elliptical coordinate system (I use alternative elliptical coordinates). And I need to determine connections between coordinates in order to fetch a covariance matrix of...

28 February 2021 364 3 View

How can I convert .vesta file to a .cif file?

I've used the "export data" option in Vesta software to convert my unit cell into a cif file however when I use that cif in atomsk it shows error such as "can't read the position of atom 0". If I...

28 February 2021 4,966 3 View

For modelling epoxy-based matrices (in composites), which model in ABAQUS is the most suitable, Concrete damaged plasticity or Drucker-Prager model?

I am working on developing a micromechanical FE model for predicting kink-band formation in UD composites. To model matrix plasticity, which model, out of Concrete Damaged Plasticity and...

28 February 2021 5,415 1 View

Can I run spearman's correlation on non monotonic data? Is it advisable?

Hi all, I am running a partial correlation analysis on mood data. I want to see if there is a correlation between scores on a novel hypomanic mood scale and existing measures of hypomania - the...

25 February 2021 1,619 3 View

No amplification data for qPCR on MxPro?

I have set up a qPCR run on MxPro with SYBR green and ROX as a reference, however, when I go to the analysis section the program seems to only collect data for the dissociation curves and not the...

25 February 2021 8,039 1 View

How to handle studies which report perfect effect sizes in a meta-analysis using Pearson's r?

I'm in the process of updating a meta-analysis and in one of the new studies, effect sizes are reported as Tau-U. Two of the effect sizes are reported as Tau-U = 1.00. I am using Andy Field's...

24 February 2021 2,265 3 View