Creating Pair IDs in Stata
Dear All, I have a dataset with 178 importing countries and 185 exporting countries for 50 years (1962 - 2011). I want to create country pair dummies. I use the following commands egen pairid =...
View ArticleHow can I graph a continuous variable changing over time?
Hi, I'm trying to create a graph showing the mean value of a numerical continuous variable (and possibly its standard deviation) among two different groups (0/1). The same variable has been measured at...
View ArticleReverse cumulative distribution plot
I have two questions regarding reverse cumulative distribution graphs. I have data on antibody concentration from two groups of people (vacc. vs unvacc). I want to plot these values with reverse...
View Articlecombining multiple variables into a single variable
Hi, How do I go about this apparently simple task in STATA? I need to combine 10 variable (with a yes/no answer) into a single one. I am battling to understand the example in the user guide. thanks
View Articlecluster (undirectedcode)
Hi all, I'm supposed to replicate and analyse an article for one of my class. The article I use have a do file with it and the regression in it is : reg var1 var2 var3, cluster(undirectedcode) I cant...
View Articleamount of sleep from hours, minutes, and am/pm variables
Hello all, I am trying to determine the total amount of sleep (in minutes) that a respondent typically gets. The data are based on two questions that produced six variables: "what time do you usually...
View ArticleAutomatic cross-tabulation percentage calculations
Hey guys. So this is a bit of a "luxury" problem, but I've been thinking about it none the less. I have data on an individual level and I'm working on a dataset on makrolevel. Both the datasets have 31...
View ArticleNeed Help with Country Pair and Year Dummies
Hello Guys, I am working with panel data with 191 importer and 191 exporter countries across 50 year. I want to make importeryear and exporteryear dummies but even with a fast computer, I am unable to...
View ArticleQuestion on Cox and Logistic regression
I have a study limited in 1 year (365 days) and the failure event is in the case of one subject dies before 365 days. In Cox proportional hazard model, the informations of the patiens survived are used...
View ArticleRescale an index in stata
This is probably simple but i cant find it in my textbooks... How do i rescale an index ? if for example i want to redefine the x axis from showing 1-10 to showing 1-100 instead ? thanks
View ArticleI reshaped long and now there are more categories in my encoded variables!
Hi :) I reshaped my dataset and now my encoded variables have more categories than they had. What may be the cause? (PERS_ID is the identifier for the person while STU_ID identifies the identification...
View ArticleBinning data in Stata 9.1
Hi, Could anyone tell me how to bin data in Stata 9? I want to construct a table for Fisher's exact test and can't seem to get the coding right. Thanks!
View ArticleConvert annual data to quarterly
Hi all, I have an annual time series and I tried ti use the command "findit Denton" to convert the data to quarterly. So, anyone can help to how to execute Denton method. Thank at advanced
View ArticleLoop do-file with a few adjustments
Hey guys. So I've made a long do-file and I was wondering if there were a clever way to repeat parts of the do-file with a few changes? I'm doing a series of cross-national tests and I want to see what...
View ArticleBar order in Stata
Hello, I wanted to ask if anyone knows how to customize the bar order in the bars using the catplot command. In other words, I am interested in creating a graph with catplot whereby the values are in...
View Articlextmixed covariances: why it doesn't work??
Hi, I'm trying for weeks to run the following model: mi estimate, variance : xtmixed MathG5 MathG4 , || classID:, covariance(unstructured) || studentID: , covariance(unstructured) This is only the...
View Articledata transformation for negative values to get normality
Hi all, I am working with negative and positive values for a variable (range data beetwen -8.00 - 10.00), lamentably this data is nor normal according Kolmogorov smirnov test... I am trying to...
View ArticlePanel Cointegrated data analysis
I am currently working on Panel data of Seven African stockmarkets and need Seemingly Unrelated Regression Estimation procedures in STATA. I will need the STATA codes for either Simulation or...
View Articleinsufficient observations, fixed effect
hi when i estimate fixed effects the error "insufficient observations" occur. does anyone how i can solve this problem? xtset lfdk wave xtreg CCHappy sportsclub MCSex MEdu MInc MUrban CAge, fe storage...
View ArticleNon linear regression
Happy new year, in my master thesis i want to calculate a non linear regression. when i have a look at the lowess smother, i see the dependency is non linear. It looks pretty much like this:...
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