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Forum: Stata

Stata usage and programming, Stata help

  1. randomly match cases and controls when the ratio is not 1:1

    Hello to everybody! I am trying to match cases and controls for two studies, in the first one the ratio can be 1:1 in the second one, since the...

    Started by Rerun‎, 04-16-2014 10:01 AM
    • Replies: 5
    • Views: 130
    Today, 03:40 AM Go to last post
  2. panel data and time effects

    I have a panel data database for all states between the years 1983-2011, so when I run regressions the results appear for the whole period, but I am...

    Started by Belabda‎, Yesterday 03:55 PM
    • Replies: 1
    • Views: 102
    Yesterday, 04:28 PM Go to last post
  3. How to run a Chow test for a logit model

    I want to run the equivalent of a Chow test for a logit model, to check if pooling the datasets is justified. Does anyone know which test to use for...

    Started by AliT128‎, Yesterday 11:25 AM
    • Replies: 1
    • Views: 125
    Yesterday, 11:30 AM Go to last post
  4. Time series - Selecting limited time period to regress

    Hi, I have a time series with monthly data from 1871 till 2014 which I can run regressions on. However I would like to run several regression on...

    Started by cjwehtje‎, Yesterday 03:55 AM
    regression, settings, time series
    • Replies: 1
    • Views: 72
    Yesterday, 05:40 AM Go to last post
  5. MLE estimation precision

    Hi, I would like to ask a question, im estimating EGARCH model in stata with 5-minute returns, and my model could not converge with error "r(430)",...

    Started by Tomas Juchelka‎, 04-19-2014 05:35 AM
    • Replies: 1
    • Views: 103
    04-19-2014, 08:38 PM Go to last post
  6. Merging with unique personids but not sorted as unique in datasets

    Hi Everyone- First, long time viewer of the forum but first time posting. Thank you so much for any advice, this site has helped get me back on...

    Started by Jay85‎, 04-19-2014 11:25 AM
    merge, multiple datasets, personid, unique identifier
    • Replies: 1
    • Views: 79
    04-19-2014, 08:36 PM Go to last post
  7. Firm fixed effects in panel data

    Hi everyone! I am pretty new in working with Stata and I am facing following problem: I have a large dataset of US banks and insider...

    Started by Gerka‎, 04-18-2014 11:09 AM
    • Replies: 0
    • Views: 70
    04-18-2014, 11:09 AM Go to last post
  8. Finding Agencies that were funded in all years

    Hey guys, I have 6 columns containing Agency IDs of different years. I would like to know which agencies appear in all the years. That is which...

    Started by Marvin85‎, 04-18-2014 09:46 AM
    • Replies: 0
    • Views: 44
    04-18-2014, 09:46 AM Go to last post
  9. Coefficient interpretation in panel data

    Hi, I am using a panel of 2249 schools with data from 2002-2008. Some of the schools are single sex schools whilst others are mixed sex. Some...

    Started by Kaimajerus‎, 04-17-2014 09:42 AM
    interpret panel data
    • Replies: 0
    • Views: 143
    04-17-2014, 09:42 AM Go to last post
  10. How can I split variables by row?

    I have a data set that includes both yearly and quarterly data. I need to split it up into individual quarterly and annual variables, but can't...

    Started by statisticalmoron‎, 04-16-2014 05:58 AM
    • Replies: 4
    • Views: 138
    04-17-2014, 06:49 AM Go to last post
  11. Generate dummy according to first 3 numbers of a string varaible

    I am using panel data and my panel variable is schid which is an identifier for 2249 schools. The data is from 2002-2008. In the question that I am...

    Started by Kaimajerus‎, 04-16-2014 05:14 PM
    • Replies: 2
    • Views: 160
    04-17-2014, 03:10 AM Go to last post
  12. How can I drop observations when a variable is equal to any number from a sequence?

    I have a variable in a data set that has numbers between 0 and 1000. I want to drop observations where the variable is equal to any number from the...

    Started by econlearner‎, 04-16-2014 04:55 PM
    drop values, sequence, stata
    • Replies: 2
    • Views: 107
    04-16-2014, 09:33 PM Go to last post
  13. collapse and counting the same observations

    Hi I am currently analyzing the data set that have the name of organizations, the name of EMR vendors and the 7 different functions. I would like...

    Started by jykim‎, 04-16-2014 05:16 PM
    • Replies: 0
    • Views: 119
    04-16-2014, 05:16 PM Go to last post
  14. importing spss-files via ado usespss

    Good afternoon it's a long time I've been here, but yo always were so helpful - I try my luck again. The problem is: A colleague found and...

    Started by siskin‎, 04-04-2014 07:25 AM
    • Replies: 2
    • Views: 127
    04-16-2014, 02:48 AM Go to last post
  15. Matching datasets on more than one variable

    Hello everyone, I have a dataset containing companies and the funds which have financed them at some point in time. I need to combine this data...

    Started by vcheck‎, 04-14-2014 01:34 PM
    • Replies: 0
    • Views: 97
    04-14-2014, 01:34 PM Go to last post
  16. Volatility Modelling- negative coefficients and r(430)

    Dear Statisticians, I am having some issues modeling the effect of news events on market indices. Namely, I am using garch (1,1) and have 8 dummy...

    Started by bgstefan‎, 04-14-2014 09:19 AM
    • Replies: 0
    • Views: 124
    04-14-2014, 09:19 AM Go to last post
  17. Corr and robust std. errors

    Hi, is there a way to compute correlation coefficients with robust standard errors a la "vce(cluster var)" in regression analysis? Thanks

    Started by lbv‎, 04-14-2014 05:10 AM
    • Replies: 0
    • Views: 75
    04-14-2014, 05:10 AM Go to last post
  18. to RedOwl : an error when i run LCAPlugin.

    Dear RedOwl, i have met the same error as @Fulton 【 but I keep getting this error message "unrecognized command" when I run the examples to test...

    Started by ryang‎, 04-14-2014 04:25 AM
    • Replies: 0
    • Views: 61
    04-14-2014, 04:25 AM Go to last post
  19. Problem with r(2000) no observations

    Hi all, even after asking Dr. Google I did not yet find any answer for my problem so I hope somebody can help me here. I imported some date from...

    Started by Ave‎, 04-12-2014 09:04 AM
    • Replies: 1
    • Views: 128
    04-12-2014, 09:25 AM Go to last post
  20. Regression in STATA

    Hi guys, Currently I am struggling with a regression which I want to do. I want to do a regression in STATA but I don't know how to do it. I hope...

    Started by Statahulk‎, 08-27-2012 07:17 AM
    2 Pages
    1 2
    • Replies: 19
    • Views: 3,735
    04-11-2014, 10:25 PM Go to last post
  21. Stata: ml versus nl

    I need to estimate an equation using some iterative method to optimally choose the coefficients. I won't go into the reasons that I can't use a...

    Started by kungal‎, 04-05-2014 07:41 PM
    maximum likelihood, non-linear least squares, stata
    • Replies: 1
    • Views: 133
    04-11-2014, 05:10 PM Go to last post
  22. Evaluating the significance of a model which uses Odds Ratio

    Hey, guys! I know just the basics of Regression Models and in my job we're using a logit model, with the "Odds Ratio" option. The thing is that...

    Started by joseto_caviedes‎, 04-10-2014 04:25 PM
    • Replies: 2
    • Views: 190
    04-11-2014, 05:07 PM Go to last post
  23. Calculating simple statistics for the distribution

    I'm new to STATA and am struggling with some basic syntax. I have student-level data from several schools, like this: StudID School Sex ...

    Started by grreee12‎, 03-26-2014 01:10 PM
    • Replies: 7
    • Views: 276
    04-11-2014, 05:05 PM Go to last post
  24. Gaps in financial time series (i.e. weekends)

    Hi everybody, I am using Stata 13 and have several time series that focus on equity returns etc. Using tsset results in setting the time series...

    Started by Panda05‎, 04-11-2014 10:26 AM
    • Replies: 0
    • Views: 95
    04-11-2014, 10:26 AM Go to last post
  25. Means and frequencies

    Hi, perhaps a really stupid question, but how can I see the N's when running a mean command? I know that one can use sum, but when you have numerous...

    Started by lbv‎, 04-11-2014 01:00 AM
    • Replies: 2
    • Views: 82
    04-11-2014, 05:42 AM Go to last post
  26. 5 minute data

    Hi guys, Im having problems with high frequency time series data, especially i have 5 minute data for SP 500 stocks, im planning to model volatility...

    Started by Tomas Juchelka‎, 04-10-2014 12:52 PM
    • Replies: 0
    • Views: 109
    04-10-2014, 12:52 PM Go to last post
  27. Help with overlapping

    Hello I have a variable, return on assets (ROA) for financial years 1997 to 2010 for US firms. I would like to calculate performance volatility...

    Started by zaksotiris‎, 04-10-2014 09:24 AM
    • Replies: 0
    • Views: 99
    04-10-2014, 09:24 AM Go to last post
  28. Convert Stata13 file to Stata12

    Hi to all. I am trying to access a .dta file generated by STATA 13 but I have STATA 12 only. When trying to open I get the r(610) error, obviously....

    Started by NoPR‎, 04-10-2014 08:21 AM
    • Replies: 0
    • Views: 131
    04-10-2014, 08:21 AM Go to last post
  29. Help with new variable

    Hey everyone, I am new to stata and need help on assignment. my task is to "generate a new variable 'white' that is coded 1 if the respondent's...

    Started by jhartman35‎, 04-09-2014 04:39 PM
    • Replies: 2
    • Views: 175
    04-10-2014, 03:02 AM Go to last post
  30. recession shading

    hi , i have a graph with real industrial production and i would like to shade the areas of recession from 2000 to 2001 and 2008 to 2010 the command i...

    Started by eac13‎, 04-09-2014 04:24 PM
    • Replies: 2
    • Views: 66
    04-10-2014, 02:55 AM Go to last post
  31. multiple imputation 5-years average

    Hello. I have need to do panel regressing with mi (100 imputations) data. But the problem is that I have annual data but i need 5-years averages. How...

    Started by alive19xx‎, 04-09-2014 06:25 AM
    • Replies: 0
    • Views: 102
    04-09-2014, 06:25 AM Go to last post
  32. Direct Standardization in Stata using dstdize command

    Hi everyone, I've directly standardized injury events in 17 US states using the stata command "dstdize total_injuries population age_group,...

    Started by simonja‎, 04-09-2014 12:08 AM
    • Replies: 1
    • Views: 116
    04-09-2014, 03:03 AM Go to last post
  33. Generating a complex new variable in Stata

    Hey fellow Stata'ers, I need a smarter brain than mine to help me with a problem. Example of my dataset: Distance Loc_ID Alt_Loc_ID 100______1...

    Started by Miko‎, 04-08-2014 08:19 AM
    • Replies: 2
    • Views: 95
    04-09-2014, 02:30 AM Go to last post
  34. Panel regression

    Hi, i'm doing a regresssion on panel data, and i don't know if i can use a random effects or fixed ones? i already found the result by using hausman...

    Started by selma‎, 04-08-2014 04:20 PM
    • Replies: 0
    • Views: 167
    04-08-2014, 04:20 PM Go to last post
  35. Box plot order

    Dear Forum I have some graphical box plot problems: graph box y1 y2 y3 y4, over(cat_var) How do I put the boxes in a specific order so every...

    Started by Aleco‎, 12-12-2013 10:00 PM
    • Replies: 12
    • Views: 549
    04-06-2014, 10:05 AM Go to last post
  36. Probit Interpretation help - will students live at home during university

    Hi all, New to the forum this is my first post. I am a third year economic student completing my first course in econometrics (working with...

    Started by bikcanada‎, 04-05-2014 01:33 PM
    • Replies: 0
    • Views: 139
    04-05-2014, 01:33 PM Go to last post
  37. Stata over linux doesn't run ado file

    Hi I installed correctly the ado file for seasonal adjustment x12 under ubuntu/linux. My machine does recognise x12a in my libraries, but when i...

    Started by jfca283‎, 04-05-2014 01:50 AM
    • Replies: 3
    • Views: 165
    04-05-2014, 01:05 PM Go to last post
  38. I can't run ado. Message about wrong adopath.

    I installed this package Menu-driven X-12-ARIMA seasonal adjustment in Stata And i also installed the x12a64 package on my PC. Its location is...

    Started by jfca283‎, 04-04-2014 09:55 AM
    • Replies: 2
    • Views: 122
    04-04-2014, 01:43 PM Go to last post
  39. Quick help on graphing a variable

    Say I've got a variable for the type of job someone does. Then I have a variable for how much someone earns. How do I produce a bar graph such...

    Started by dataset‎, 04-02-2014 10:48 AM
    • Replies: 1
    • Views: 150
    04-02-2014, 06:21 PM Go to last post
  40. Match firms by sic code and ipo date in state

    Hi, I am currently researching the US Ipo market and due to stata being completely new for me I encountered the following problem: I have two...

    Started by tokke‎, 03-31-2014 11:32 AM
    matching, stata
    • Replies: 1
    • Views: 118
    04-01-2014, 06:42 PM Go to last post
  41. Question Exporting results of the -table- command to Excel?

    Hi, is there any easy way to automate exporting a table command (with the content() option) to excel? I know about the various 'mouse' methods of...

    Started by khaidoba‎, 03-30-2014 12:54 PM
    commands, excel, export, stata, table
    • Replies: 2
    • Views: 142
    04-01-2014, 06:40 PM Go to last post
  42. Linear regression

    Hello, In attachment you find my model where I want to do a linear regression on in stata. Now was my question how I can define these summations...

    Started by marnix‎, 03-20-2014 04:51 AM
    • Replies: 8
    • Views: 351
    04-01-2014, 06:11 AM Go to last post
  43. Which is correct for my data??? Multilevel Modeling or Clustered Robust SEs approach?

    Hello everyone, I would love to hear your quick reaction to a particular data structure my colleagues and I are working with because we keep...

    Started by ema2146‎, 03-31-2014 09:49 AM
    • Replies: 1
    • Views: 137
    03-31-2014, 11:34 AM Go to last post
  44. Question reg and outreg2: Display variable value labels for interaction terms?

    I'm regressing using dummy interaction terms: reg y x1 i.x2 where x2 is split into 3 categories: "Category 1" if x2==1; "Category 2" if x2==2;...

    Started by khaidoba‎, 03-26-2014 06:24 AM
    • Replies: 2
    • Views: 195
    03-30-2014, 01:34 PM Go to last post
  45. Can stata do historical decomposition for VAR model?

    Can stata do historical decomposition for VAR models?

    Started by conglin‎, 03-10-2014 04:40 PM
    • Replies: 2
    • Views: 241
    03-28-2014, 03:13 PM Go to last post
  46. Repeated measures ANOVA- reshape data?

    I assessed HIV knowledge at pre, post and follow examinations. It was the same exam 14 items for pre, post and follow-up. Also The same participants...

    Started by Marvin85‎, 03-27-2014 02:45 PM
    anova, repeated measures, reshape data
    • Replies: 1
    • Views: 230
    03-28-2014, 08:14 AM Go to last post
  47. Question xtgee and estimating relative risks

    I am trying to complete a subgroup analysis. I have successfully created a model using xtgee command and I am looking for the correct post-estimation...

    Started by Annabella‎, 03-27-2014 10:26 AM
    xtgee
    • Replies: 0
    • Views: 85
    03-27-2014, 10:26 AM Go to last post
  48. Reducing the number of observations?

    Hi, Is it possible to reduce the number of observations for a regression analysis? For a homework assignment, I am asked to limit the sample size. ...

    Started by vberisha‎, 03-26-2014 06:55 PM
    • Replies: 1
    • Views: 153
    03-27-2014, 02:32 AM Go to last post
  49. Moving average across panel data

    Hi, I have a time-series dataset consisting of the number of bills introduced by each member of congress in a given year, organized into panel data...

    Started by npelikan‎, 03-26-2014 12:16 PM
    • Replies: 0
    • Views: 78
    03-26-2014, 12:16 PM Go to last post
  50. Ordinal DV and Categorical IV - Correct test

    I have a self-efficacy scale (DV). my self-efficacy scale is a liker scale (ordinal; 1 to 7, strongly agree to Strongly disagree) I asked the same...

    Started by Marvin85‎, 03-24-2014 04:13 PM
    ordinal and categorical
    • Replies: 7
    • Views: 221
    03-26-2014, 09:30 AM Go to last post
  51. Drop if same score on 16 out of 21 variables

    Hi I have a datset with 100,000 observations and 21 variables (v1-v21). I want to drop all observations that have the same score on 16 or more of...

    Started by lund_kasper‎, 03-26-2014 04:08 AM
    • Replies: 1
    • Views: 107
    03-26-2014, 05:04 AM Go to last post
  52. Formatting legends in distplot with "over" command

    EDIT: I feel silly; this was just a simple comma error. Please disregard. I've been formatting a series of CDFs using distplot for presentation,...

    Started by Clumpy‎, 03-25-2014 09:45 AM
    • Replies: 0
    • Views: 82
    03-25-2014, 09:45 AM Go to last post
  53. Augmented Dickey Fuller Test

    How do you test for non-stationarity using an augmented Dickey Fuller test with no time trend and a lag of 2 or more in STATA? I need simple...

    Started by freespirited55447‎, 03-24-2014 10:48 PM
    dickey fuller augmented, regression, sample t-statistic, time series
    • Replies: 0
    • Views: 152
    03-24-2014, 10:48 PM Go to last post
  54. Beginner's Troubles

    I sent out a survey containing multiple likert scale questions. I now have to analyze the results and that's a bit of a problem for me. My...

    Started by djl0330‎, 03-22-2014 10:45 AM
    • Replies: 1
    • Views: 182
    03-24-2014, 09:24 AM Go to last post
  55. Descriptive statistics

    Dear all, I have 12 000 households, and I have to calculate the percentage of children and adults per household. how can I calculate it using...

    Started by amale‎, 03-21-2014 09:55 AM
    • Replies: 1
    • Views: 187
    03-21-2014, 03:27 PM Go to last post
  56. Change in Ordinal variables pre and post

    Hi, I'm looking at changes of self efficacy. I'm trying to figure out which test to use for changes in a ordinal variables (1-5 scale; Stongly...

    Started by Marvin85‎, 03-20-2014 02:11 PM
    ordinal variable change
    • Replies: 1
    • Views: 143
    03-21-2014, 10:52 AM Go to last post
  57. How to create graph showing PCA with groups from Cluster analysis?

    Yet again I have run into another wall. I am doing a project for uni and have came across a problem, I am looking to build a graph with PCA scores (2...

    Started by AlexSheehy1992‎, 03-20-2014 04:39 PM
    cluster analysis, principal component, score
    • Replies: 1
    • Views: 157
    03-21-2014, 09:39 AM Go to last post
  58. replacing missing values for zeros in a loop

    Hello Stata experts, I am working in panel data with dyadic data and years. My data base is like the following: pair year fdi 1 2005 . 1 2006 ....

    Started by alvaro8apaz‎, 03-21-2014 03:08 AM
    loop, missing values, zeros
    • Replies: 2
    • Views: 138
    03-21-2014, 04:23 AM Go to last post
  59. Plotting the main and interaction effect after mixed-effect linear regression

    Dear Stata expert, I am using Stata 12. I used factor analysis to derive several factors for my analysis. Then I used linear mixed-effect...

    Started by mbakhtiar‎, 03-20-2014 08:59 PM
    • Replies: 0
    • Views: 147
    03-20-2014, 08:59 PM Go to last post
  60. Once completing a PCA on a dataset how do I go about adding the PCA scores to data?

    I am only new to STATA and was wondering once I have completed a PCA on my dataset, how do I see the scores on the dataset? (The data tab at the top...

    Started by AlexSheehy1992‎, 03-20-2014 04:33 PM
    cluster analysis, dendrogram, principal component
    • Replies: 0
    • Views: 127
    03-20-2014, 04:33 PM Go to last post

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