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Forum: Stata

Stata usage and programming, Stata help

  1. Latent Class Analysis with Stata

    Hi, Have anyone used Stata for Latent Class Analysis? I want to estimate willingness to pay with it, but I'm not sure it is possible with this...

    Started by jsuazo‎, 06-14-2013 10:55 AM
    2 Pages
    1 2
    lca, stata
    • Replies: 19
    • Views: 8,252
    Yesterday, 04:02 PM Go to last post
  2. generate a variable based on another variable

    Hey guys, one question. I have a variable with company names that repeat themselves for 250 times cause that is the number of days i study. so i have...

    Started by eac13‎, 03-23-2015 02:35 PM
    • Replies: 1
    • Views: 124
    03-25-2015, 11:16 PM Go to last post
  3. interactions not allowed

    i am using a fixed effects model with log of wage as the dependent variable when i try xi: xtreg logwage i.d08##c.yrschool exp2 married, i(id)...

    Started by Alexander8‎, 03-25-2015 08:56 PM
    interaction, panel fixed effects, stata, stata 12
    • Replies: 1
    • Views: 76
    03-25-2015, 11:15 PM Go to last post
  4. Three way anova for repeated measure

    Sorry for the double post as I already posted this on the biostat section but it is indeed more appropriate to be posted here! Hi all, I am...

    Started by Ralph84‎, 03-25-2015 04:46 AM
    • Replies: 0
    • Views: 73
    03-25-2015, 04:46 AM Go to last post
  5. Need help interpreting random-effects output

    Attached is the output I received in Stata for my random-effects model. I have three time-invariant variables (WS, WRLURI, UA) and three time-varying...

    Started by kriscrosssss‎, 03-22-2015 06:53 PM
    • Replies: 1
    • Views: 127
    03-22-2015, 06:54 PM Go to last post
  6. "testparm" for the time fixed effect

    I am using the panel data (year and sic). After running Hausman test, the results suggest that the fixed effect model is appropriate. And then I...

    Started by jxy9137‎, 03-19-2015 02:57 PM
    • Replies: 0
    • Views: 109
    03-19-2015, 02:57 PM Go to last post
  7. mixed logit model; coefficient for each attribute

    Hello all, I am new to the forum and looking forward to talking with all of you, and hopefully at some stage I will be able to help someone but...

    Started by Alan McMichael‎, 03-13-2015 05:31 AM
    • Replies: 1
    • Views: 260
    03-13-2015, 10:25 AM Go to last post
  8. Help with GEE

    Hello! For a work project, I need to analyze repeated measures data using GEE, using STATA. I am a bit clueless. I have found some resources and...

    Started by alanend‎, 03-11-2015 02:12 PM
    • Replies: 3
    • Views: 204
    03-12-2015, 12:31 PM Go to last post
  9. Help with hazard function plot

    Hi, I'm looking for help with hazard function plot. Sample of dataset of 1200 obs: ID Age Drugduration Hypertension Event EventDay Censored...

    Started by biscodyl‎, 03-12-2015 11:11 AM
    hazard function, hazard rate, stata, stcox
    • Replies: 0
    • Views: 84
    03-12-2015, 11:11 AM Go to last post
  10. Logit regression with time-series data

    Hi! I want to use logit regression whit lags of the independent variables. Now, I was told I need to use time fixed effects for this (even though I...

    Started by Lars001‎, 03-09-2015 05:26 AM
    • Replies: 0
    • Views: 190
    03-09-2015, 05:26 AM Go to last post
  11. how to save regression results in stata

    I need to save regression results in Stata, Indeed I've already run a multiple sets of regressions without having to retype the command each time...

    Started by AMAELLE‎, 03-07-2015 11:13 AM
    • Replies: 0
    • Views: 188
    03-07-2015, 11:13 AM Go to last post
  12. Counting days

    Dear everyone I would like to count total number of days between two dates in this format "dd/mm/yyyy" , how do I tell stata that it is calendar...

    Started by Aleco‎, 03-07-2015 09:14 AM
    • Replies: 0
    • Views: 129
    03-07-2015, 09:14 AM Go to last post
  13. Formatting into time series data?

    I am trying to format my date parameter so that STATA recognizes it as time series parameter. The format is the most basic of form: 2000, 2001, 2002...

    Started by Tony123‎, 03-03-2015 01:34 PM
    • Replies: 11
    • Views: 296
    03-04-2015, 09:47 AM Go to last post
  14. Heckman Selection for Multinomial Outcomes

    Hi everyone, I have an important questions with respect to heckman adjustment for categorial outcomes: I am searching for a solution to control...

    Started by Chris86‎, 03-02-2015 10:19 AM
    • Replies: 0
    • Views: 129
    03-02-2015, 10:19 AM Go to last post
  15. Count values of a variable based on another variable

    How can I count the number os Grantees that have used the ipad to collect participants information. In this case, 2 grantees CA0083 and CA0214 used...

    Started by Marvin85‎, 02-19-2015 05:43 PM
    count, count if
    • Replies: 4
    • Views: 349
    02-21-2015, 06:44 AM Go to last post
  16. Random effect model report R2 or chi2

    What is important to report in a random effect model? R2: within, between, overall, or Wald chi2? The thing is that when adding a variable, I find...

    Started by luyinxi‎, 02-20-2015 04:25 AM
    • Replies: 0
    • Views: 110
    02-20-2015, 04:25 AM Go to last post
  17. Using bcal function

    Hi all. I am a total noob for asking this, but even though Ive read all statacorp has to offer on the subject, I can not get the bcal function to...

    Started by statkinglegend‎, 02-19-2015 04:38 AM
    • Replies: 0
    • Views: 132
    02-19-2015, 04:38 AM Go to last post
  18. first -difference command on STATA

    I have a mcor panel for about 40 countries for 24 years .I want to take the first -difference for a variable for each country's time series. Do you...

    Started by abc‎, 12-17-2013 07:44 AM
    • Replies: 7
    • Views: 15,701
    02-16-2015, 08:14 AM Go to last post
  19. generate new var from several string variables

    I have 10 string variables (imp1, imp2, ..., imp10). I want to generate only one variable which summarizes the content of the 10. I used the...

    Started by andik‎, 02-14-2015 11:00 PM
    • Replies: 1
    • Views: 217
    02-15-2015, 09:26 PM Go to last post
  20. Create a variable based on a hierarchy

    Hello friends, I have a dataset where each services offer by providers is in one row. However my goal is that each provider represents one row. ...

    Started by Marvin85‎, 02-13-2015 01:42 PM
    reshape
    • Replies: 0
    • Views: 191
    02-13-2015, 01:42 PM Go to last post
  21. Reshape, collapse, restructure

    Hello guys, These are my variables: GranteeID Funding= Funding type there are 4 funding types (a,b,c,d) ProviderID=provider of the services...

    Started by Marvin85‎, 02-12-2015 09:59 AM
    collpase, reshape
    • Replies: 1
    • Views: 186
    02-13-2015, 09:13 AM Go to last post
  22. egen count only but unique values

    Hello, Below is how my dataset looks like: GranteeID ProviderID 11 11 12 11 26 27 78 27 78 27

    Started by Marvin85‎, 02-12-2015 04:01 PM
    count unique values, egen count, unique
    • Replies: 0
    • Views: 175
    02-12-2015, 04:01 PM Go to last post
  23. Learning Stata - Variables

    Hi, This is my first post on here and learning Stata although been working with it for some time but only as a user and not in a programming...

    Started by IanB‎, 02-11-2015 02:13 PM
    • Replies: 0
    • Views: 183
    02-11-2015, 02:13 PM Go to last post
  24. Create an index with the PCA in Stata 11 from the Demographic and Health Survey

    Dear all, I am a new user. I am writing my Master's thesis and as a part of it I am analyzing the data from the Demographic and Health Surveys...

    Started by lillaus‎, 11-09-2013 11:31 AM
    • Replies: 1
    • Views: 1,494
    02-11-2015, 08:31 AM Go to last post
  25. Show all variable label

    I am just running frequency tables but I need to see the entire variable label. stata only give me a portion of the variable label when it is too...

    Started by Marvin85‎, 02-02-2015 12:39 PM
    var label
    • Replies: 2
    • Views: 264
    02-10-2015, 04:19 PM Go to last post
  26. Use of holdout cases generated in SPSS in STATA

    I am working on consumer preferences for fish, using conjoint analysis. My experimental design was generated in spss using orthogonal design, but my...

    Started by Edith Gondwe‎, 02-10-2015 07:22 AM
    conjoint analysis, holdout cases, spss, stata
    • Replies: 0
    • Views: 164
    02-10-2015, 07:22 AM Go to last post
  27. Fama Macbeth regression help

    Dear reader, We are stuck with performing a Fama Macbeth regression in STATA. The following sums up our steps, and where we got stuck. Please see...

    Started by Dan-14‎, 02-09-2015 06:08 AM
    • Replies: 0
    • Views: 185
    02-09-2015, 06:08 AM Go to last post
  28. Question a few questions for th weekend

    hello, Whenever im trying to use acprplot or towway commands I receive this message, can someone help me with it: (note: scheme s2color not...

    Started by gidlin1‎, 02-06-2015 11:51 AM
    • Replies: 0
    • Views: 188
    02-06-2015, 11:51 AM Go to last post
  29. Having problem with (if and else if) STATA syntax

    Dear Members, I am having problem with using (if and else if ) STATA command using the following logic. If variable b>c and b ~=a and a=c,...

    Started by SSue‎, 02-03-2015 12:49 PM
    • Replies: 0
    • Views: 237
    02-03-2015, 12:49 PM Go to last post
  30. How to extend limit of local/tokenize?

    Dear all, I have a problem in the implementation of the user written Tetrad Method. There must be some problem with the limit of local or...

    Started by KarinKlee‎, 02-02-2015 04:44 AM
    • Replies: 0
    • Views: 188
    02-02-2015, 04:44 AM Go to last post
  31. Constrained coefficients in a VAR model

    I have been trying to find out how to constrain coefficients in a VAR model. In a particular model, I need the coefficients of the lags to sum to...

    Started by darth.gnosus‎, 02-01-2015 07:50 PM
    constrained var
    • Replies: 0
    • Views: 146
    02-01-2015, 07:50 PM Go to last post
  32. Latent Class Analysis with Stata

    Hi I have succesfully installed the stata LCA plugin. But I am not able to do the analysis in my dataset. can anyone assist me how make proper data...

    Started by duttamili‎, 01-30-2015 12:49 PM
    • Replies: 0
    • Views: 8
    01-30-2015, 12:49 PM Go to last post
  33. any number at the end of string extraction

    Hi guys, I need to extract the number at the end of a string variable. The problem is that there are also number at the beginning of the string. ...

    Started by Marvin85‎, 01-29-2015 09:52 AM
    string
    • Replies: 0
    • Views: 178
    01-29-2015, 09:52 AM Go to last post
  34. Covariance matrix from DCC-MGARCH

    Hi. Is there any way to display conditional covariance matrix obtained from estimation through DCC-MGARCH model? Model has following form H= DRD and...

    Started by lucychix‎, 01-27-2015 05:25 PM
    • Replies: 0
    • Views: 182
    01-27-2015, 05:25 PM Go to last post
  35. Lightbulb principal component analysis for panel data

    Dear forum members, I have a panel data and i used PCA for make an index with stata, i'm in doubt with this way , stata give me a wrong index!!...

    Started by eli ahmadpour‎, 01-26-2015 03:05 PM
    • Replies: 2
    • Views: 328
    01-27-2015, 05:18 AM Go to last post
  36. Stat/Tranfer Problem opening dataset

    Hello guys, I recently purchased Stat/Transfer, a software that allows to convert SPSS file to Stata files. The transfer went well however when I...

    Started by Marvin85‎, 01-22-2015 02:45 PM
    stat.transfer
    • Replies: 1
    • Views: 196
    01-25-2015, 10:41 PM Go to last post
  37. Lightbulb problem with xtdpdsys

    Hello dear forum members! i have a dynamic panel data and i want to estimate an Simultaneous Equations Model with system gmm and i have 4 equation...

    Started by eli ahmadpour‎, 01-22-2015 02:47 PM
    • Replies: 0
    • Views: 225
    01-22-2015, 02:47 PM Go to last post
  38. Unhappy Output Basic Statistics in Excel via - tabout -

    Hi, I am trying to output in Excel the mean and median of a few variables that we will call var1, var2, var3 etc.. by SECURITY and EVENT_WINDOW,...

    Started by amazon‎, 01-21-2015 09:07 AM
    tabout excel stata export
    • Replies: 1
    • Views: 232
    01-22-2015, 12:47 AM Go to last post
  39. Generating standardized standard errors

    I am testing a structural equation model using Stata. I need to report standardized direct, indirect and total effects with associated standard...

    Started by amsavage‎, 01-19-2015 04:25 PM
    sem, standard errors, standardization, stata
    • Replies: 0
    • Views: 203
    01-19-2015, 04:25 PM Go to last post
  40. Ploting marginal predicted probabilities with gllapred after gllamm

    Dear all, I am trying to plot marginal predicted probabilities after I fit a multilevel logit model with the command gllamm. My model is a...

    Started by Joel Smith‎, 01-19-2015 01:44 PM
    • Replies: 0
    • Views: 237
    01-19-2015, 01:44 PM Go to last post
  41. Help with growth model

    Hi, I have a research question that I am not sure how I can code it in stata. I think I have to use growth model, but not sure how! I appreciate...

    Started by anna_258‎, 01-17-2015 10:08 AM
    • Replies: 0
    • Views: 178
    01-17-2015, 10:08 AM Go to last post
  42. How to replace values of one sample using the values from another sample

    Sorry for the confusion that the title might result, but my question is the following: Suppose I have two samples of observations, say, CPS 2000...

    Started by BTan‎, 01-16-2015 08:09 PM
    • Replies: 0
    • Views: 198
    01-16-2015, 08:09 PM Go to last post
  43. How to obtain standard deviation for COUNT data , while using Survey data and subpopu

    hello all, I have previously posted a question about obtaining SD for mean in survey setting and was able to get answer from statalist(thank you,...

    Started by ritupuri‎, 01-16-2015 06:39 PM
    survey stata
    • Replies: 0
    • Views: 186
    01-16-2015, 06:39 PM Go to last post
  44. Graphing y_hat

    Hi All, I'm a novice user of STATA and seek your help. I have a regression Eg: Y = alpha + beta1 (X1) + beta2 (X1)^2 + beta3 (D1) + Gamma1 (P1)...

    Started by Equate‎, 01-07-2015 01:57 PM
    • Replies: 1
    • Views: 700
    01-15-2015, 05:03 AM Go to last post
  45. Confused with hausman

    Hi all! I ran FE and RE on panel data of 53 countries. Unfortunately, Hausman is not giving proper results and says 'model fitted on these data...

    Started by mahamfurqan‎, 01-14-2015 06:59 AM
    • Replies: 0
    • Views: 358
    01-14-2015, 06:59 AM Go to last post
  46. How to draw restricted cubic splines after logistic regression in Stata 12.1?

    Dear everyone, I would like to draw resticted cubic splines in a cohort study, including OR and 95% CI, after multivariate Logistic regression...

    Started by Keiichi‎, 12-29-2014 08:25 PM
    • Replies: 2
    • Views: 521
    01-07-2015, 03:53 AM Go to last post
  47. Copying observations from t to t+1

    Hello everybody! Could you please help me with the following problem. I have a panel data where individuals "ind" are nested within...

    Started by Slavutich‎, 01-06-2015 06:27 PM
    • Replies: 0
    • Views: 177
    01-06-2015, 06:27 PM Go to last post
  48. Appropriate excel form for panel quarterly data

    Dear all, I hope you are doing well. I am trying to shape an excel sheet in order to be read by Stata (File --> Import). I have quarterly data...

    Started by Kostas‎, 01-06-2015 01:44 PM
    • Replies: 0
    • Views: 158
    01-06-2015, 01:44 PM Go to last post
  49. saving tabstat output

    I have panel data with the cross-section as American states (n=48) and time as years (n=25). I want to want to take the median of the dependent...

    Started by rbsoc‎, 12-31-2014 09:15 AM
    • Replies: 0
    • Views: 379
    12-31-2014, 09:15 AM Go to last post
  50. survey analysis with stata

    Hi I need some guidance. My goal is to test that there is not a difference between two variables, var1 and var2 in a survey. I declared as sample...

    Started by jfca283‎, 12-29-2014 10:03 AM
    • Replies: 0
    • Views: 232
    12-29-2014, 10:03 AM Go to last post
  51. String to numeric (keep real numbers) ignore

    hello friends, I have an ID variable but some observation contain strings. Below is a example of my observations. I tried to used the string,...

    Started by Marvin85‎, 12-15-2014 03:25 PM
    ignore, strong to num
    • Replies: 4
    • Views: 591
    12-19-2014, 11:34 AM Go to last post
  52. hypothesis confirmation

    Hello everyone. I am working on a survey logistic procedure on stata. I have one problem with the GOF test. The only option is an F test for testing...

    Started by Chinchilla‎, 12-13-2014 04:05 PM
    • Replies: 3
    • Views: 437
    12-18-2014, 02:40 AM Go to last post
  53. classification logistic regression

    Hello, I am trying to find a command for the equivalent of "estat classification" after a simple logistic regression. Are there any similar commands...

    Started by Chinchilla‎, 12-17-2014 03:27 AM
    • Replies: 0
    • Views: 219
    12-17-2014, 03:27 AM Go to last post
  54. creating variables

    i want to create variables and i need some help. new variable names are on the left as below. The parent variable is intcov IntCov1 Variable...

    Started by bighush‎, 11-18-2014 08:33 PM
    • Replies: 3
    • Views: 418
    12-15-2014, 05:49 PM Go to last post
  55. STATA - Finance - Portfolio Volatility

    Hi all, I am experiencing difficulties to calculate portfolio volatility each period ("rebalance") given the following variables (enclosed)....

    Started by amazon‎, 12-02-2014 07:36 PM
    • Replies: 2
    • Views: 460
    12-15-2014, 05:46 PM Go to last post
  56. percentages outside the slides

    Hello If got a Pie Chart with a really small slide. Insted of having the percentages inside the slides, I would like to have them outside the Pie...

    Started by roger20‎, 12-11-2014 04:04 AM
    • Replies: 3
    • Views: 321
    12-13-2014, 05:08 PM Go to last post
  57. running simultaneous-equation model using 2 or 3sls

    Dear colleagues I am running simultaneous-equation model consists of the following two equations: Y1 = a+b1 x1 + b2x2 + b3x3 + b4x4 (1) x2 =...

    Started by momo‎, 12-11-2014 11:54 AM
    • Replies: 0
    • Views: 281
    12-11-2014, 11:54 AM Go to last post
  58. Unique combination of variables

    Hi guys I have 15000 observations across 7 variables. I need some help with the code to generate all possible unique combinations of variables....

    Started by excelmac‎, 12-03-2014 01:08 PM
    stata, unique combination, variables
    • Replies: 2
    • Views: 356
    12-08-2014, 09:32 PM Go to last post
  59. Look for partial string on data set?

    Hi Sorry to ask this, but i really don't know how to do this tab var1 if "var2 contains text sea level" I'm not joking. I don't know. Thanks...

    Started by jfca283‎, 12-03-2014 01:20 PM
    • Replies: 1
    • Views: 350
    12-06-2014, 10:23 PM Go to last post
  60. Matrix Multiplication + Save Result by group

    Bonjour a tous, I'm trying to achieve the following multiplication VAR = W*S*W' w: S: s: I have the following variables in Stata:

    Started by amazon‎, 12-06-2014 07:20 PM
    grouped data, matrix multiplication, stata, variance
    • Replies: 0
    • Views: 237
    12-06-2014, 07:20 PM Go to last post

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