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Forum: Stata

Stata usage and programming, Stata help

  1. multilevel random effects model

    I want to look at the change in the percentage of income savings measured in dollars using repeated measures data for older adults. I want to compare...

    Started by leonedelman‎, 03-23-2017 07:18 PM
    linear growth curve., multilevel, random effects
    • Replies: 0
    • Views: 171
    03-23-2017, 07:18 PM Go to last post
  2. Age Adjusted Incidence Rates Using Poisson Regression

    Hello, I am not sure how to calculate age-adjusted incidence rates using poisson regression. I am comparing injuries for children at two schools,...

    Started by hannahlibby‎, 03-21-2017 05:57 PM
    adjustment, poisson regression
    • Replies: 0
    • Views: 148
    03-21-2017, 05:57 PM Go to last post
  3. 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: 4
    • Views: 3,767
    03-11-2017, 01:43 PM Go to last post
  4. How to: xtabond2

    Hello everyone, Me and my group (MSc students) are working on a project on inequality and growth. We have a panel dataset and want to perform...

    Started by Chrysa Pal‎, 03-11-2017 10:28 AM
    • Replies: 0
    • Views: 173
    03-11-2017, 10:28 AM Go to last post
  5. Arellano - Bond estimation: Selection between endogenous and predetermined variables

    Dear colleagues, I hope everything is well. I am running Arellano-Bond estimation (xtabond2) and I would like to ask about the selection of...

    Started by Kostas‎, 03-06-2017 06:39 AM
    • Replies: 0
    • Views: 283
    03-06-2017, 06:39 AM Go to last post
  6. Running sum

    Dear All, I have the following dataset *********************************** clear input rssd9001_bk1 rssd9001_bk2 year dealid obs...

    Started by zaksotiris‎, 03-05-2017 06:56 AM
    • Replies: 0
    • Views: 176
    03-05-2017, 06:56 AM Go to last post
  7. Cox regression time dependent effects

    I have developed a multivariable Cox model including variables associated with mortality using Stata 14.1. I identified a time dependent effect...

    Started by Maddy M‎, 02-23-2017 10:25 AM
    • Replies: 0
    • Views: 562
    02-23-2017, 10:25 AM Go to last post
  8. Dropping observations w.r.t. 2 different variables

    Well, to be honest I do not know how to express my problem so I have uploaded an image. http://imgur.com/JkmzVbV I need a command for Stata to...

    Started by Melih‎, 02-18-2017 09:49 AM
    stata
    • Replies: 0
    • Views: 395
    02-18-2017, 09:49 AM Go to last post
  9. sttocc to create a nested case-control study in stata

    Hi all, I am using sttocc to created a nested case control study, within an incident epilepsy population. The commands therefore reads as follows:...

    Started by hayley‎, 02-09-2017 06:37 AM
    nestec case-control study, stata, sttocc
    • Replies: 0
    • Views: 405
    02-09-2017, 06:37 AM Go to last post
  10. Loops and Preserve

    I have this piece of code: gen graph =. preserve forvalues v = 10(1)12 { replace graph = `v' drop if sales`v' == 0 | sales`v' ==. |...

    Started by minnari‎, 01-24-2017 07:28 PM
    • Replies: 0
    • Views: 759
    01-24-2017, 07:28 PM Go to last post
  11. How can I calculate the area of ROC curve of a Cox model?

    I have created a Cox regression model on a dataset. Now I want to test its performance with the ROC curves, but I don't find any command in stata to...

    Started by Lore88x‎, 11-16-2012 08:19 AM
    • Replies: 4
    • Views: 5,277
    01-09-2017, 09:54 PM Go to last post
  12. About stci command

    Dear experts, After using stci command, . stci if factorA==0, by(factorB) failure _d: pfsevent analysis time _t: ...

    Started by bestmic‎, 01-02-2017 10:22 AM
    • Replies: 0
    • Views: 746
    01-02-2017, 10:22 AM Go to last post
  13. Recursive Partitioning in Stata

    Dear all expert, I am going to review the survival of a group of cancer patients. I would like to explore the potential use of recursive...

    Started by bestmic‎, 12-20-2016 10:42 AM
    • Replies: 2
    • Views: 923
    01-02-2017, 08:01 AM Go to last post
  14. Median Survival after multivariate Kaplan Meier Analysis

    Dear experts, I am a newbie. I am performing an KM analysis and obtain the KM curve by the followings: stcox outcome factorA factorB...

    Started by bestmic‎, 01-02-2017 07:57 AM
    • Replies: 0
    • Views: 359
    01-02-2017, 07:57 AM Go to last post
  15. Coding for control variables in Stata 14 in linear regression?

    Hi - I need to control for two variables in my linear regression, the code thus far is; sort dde2 by dde2: regress sustain I have two...

    Started by TruroJP‎, 12-02-2016 04:26 PM
    code, regression, regression analysis, stata, stata 14
    • Replies: 0
    • Views: 1,111
    12-02-2016, 04:26 PM Go to last post
  16. Meta-analysis of diagnostic test using MCMC

    Hi. Is there some good hands-on tutorial about running MCMC analysis for the meta-analysis of diagnostic tests? Is it inbuilt STATA Bayesian analysis...

    Started by Vlajkony‎, 07-16-2016 07:42 PM
    diagnostic test, mcmc, mcmcglmm, meta-analysis
    • Replies: 8
    • Views: 1,825
    11-23-2016, 01:01 AM Go to last post
  17. Hod do I display raw data from bootstrap result in Stata

    Dear all, I have been given the required code to create a bootstrap analysis of the difference in costs between two groups. I now need to see the...

    Started by CE479‎, 10-01-2016 02:34 AM
    • Replies: 1
    • Views: 1,296
    10-03-2016, 03:29 AM Go to last post
  18. gen newvar "3+"

    Amateur stata user here. I have created a new variable ("traumas") that is meant to have categories "%reporting" 0, 1, 2, or 3+ health conditions...

    Started by nazmi1‎, 10-02-2016 08:11 PM
    • Replies: 0
    • Views: 732
    10-02-2016, 08:11 PM Go to last post
  19. How to keep omitted categorical variable on clogit model??

    Currently I am doing choice experiment modelling using conditional logistic model. I am treating all of my attributes as categorical variables....

    Started by ari raka‎, 09-23-2016 07:14 AM
    categorical, choice experiment, clogit, omitted variables, stata 14
    • Replies: 1
    • Views: 776
    09-23-2016, 07:44 AM Go to last post
  20. Find corresponding value to extreme score

    Hi, I have data that look something like: id score1 score2 score3 year1 year2 year3 5 90 42 64 2000 2001 2002...

    Started by leonedelman‎, 09-20-2016 06:08 PM
    • Replies: 0
    • Views: 699
    09-20-2016, 06:08 PM Go to last post
  21. Graphics of Time Series (tsset command isn't working due to repeated time values)

    Hey everyone, I have a question regarding the creation of graphics for time series. I have two rows with one being the study subject ( 1...

    Started by Sophie Hoffmann‎, 09-13-2016 09:00 AM
    graph, graphics, line graph, time series
    • Replies: 0
    • Views: 671
    09-13-2016, 09:00 AM Go to last post
  22. Thumbs up To computing residuals and predicting values

    Goodafternoon, I am trying to compute residuals. In the first time, I do my regression such as : regress v1 v2 v3 v4 v5 pays_encode1...

    Started by Charlotte63‎, 09-12-2016 08:47 AM
    • Replies: 0
    • Views: 554
    09-12-2016, 08:47 AM Go to last post
  23. Question Help needed!!!How to write STATA code to count the number for the following question?

    I have 5 variables (a1,a2,a3,a4,a5), all of which are categorical and coded as 0=no, 1=yes,98=refuse to report, 99=unknown. I need to calculate the...

    Started by belindalimm‎, 09-07-2016 12:23 AM
    • Replies: 0
    • Views: 577
    09-07-2016, 12:23 AM Go to last post
  24. using wild card for matching string variables

    Hi, I have created a string (pattern) variable containing 0 and 1. For example, a string pattern 0000000011 means the person appears in 10 years of...

    Started by Ujjwal K Das‎, 08-15-2016 03:16 AM
    stata 13, string variable
    • Replies: 0
    • Views: 857
    08-15-2016, 03:16 AM Go to last post
  25. String: Pull characters before "-"

    Hi guys, I have a string variable that looks something like this: MMDC-6MA. I need to extract the first letters before the sign "-", So I need...

    Started by Marvin85‎, 08-04-2016 05:13 PM
    string
    • Replies: 0
    • Views: 819
    08-04-2016, 05:13 PM Go to last post
  26. Conditional multinomial in STATA - similar to hospital choice models

    Hello, I am having a card time figuring out which conditional logit test to run, and how to structure my data. The set-up is: I am trying to...

    Started by dpac‎, 08-03-2016 03:54 PM
    • Replies: 0
    • Views: 536
    08-03-2016, 03:54 PM Go to last post
  27. mean-test

    Dear colleagues, Im trying to run a mean test (ttest) for the variable satisfaction with life by neighborhoods, however Im considering 3...

    Started by Barreto‎, 07-20-2016 06:50 PM
    • Replies: 1
    • Views: 816
    07-20-2016, 07:00 PM Go to last post
  28. Granger Causality and Heteroskedasticity

    Hello! My name is Magdalena and I have the following problem; I have daily returns of 60 firms from the year 2000 to 2015. My aim is to test for...

    Started by magdalenag‎, 07-11-2016 11:51 AM
    granger, heteroskedasticity, stata
    • Replies: 1
    • Views: 735
    07-11-2016, 01:54 PM Go to last post
  29. switch x and y axis in a dot graph

    Hello I am new to this forum and stata, but I tried really hard to construct a special dot graph. It would be great if you could help me. I...

    Started by Olivia2‎, 07-03-2016 09:58 AM
    • Replies: 0
    • Views: 760
    07-03-2016, 09:58 AM Go to last post
  30. groups in xtmixed

    Hi all Having some issues with Stata when running xtmixed. The main issue being the number of groups (in initial Group Variable table) is not what...

    Started by gy13her‎, 06-27-2016 07:35 AM
    multilevel models, stata
    • Replies: 0
    • Views: 667
    06-27-2016, 07:35 AM Go to last post
  31. Labelling dummy variables with underlying variable names

    Hey there, I'm very new to Stata and fairly certain this has a simple solution but i don't seem to find it. I have a Dataset with 200 different...

    Started by Chris2291‎, 06-22-2016 09:48 AM
    • Replies: 0
    • Views: 750
    06-22-2016, 09:48 AM Go to last post
  32. Bar graph and box-and-whisker plot sorted over binary variable

    Hi, I have a dataset that looks like that below. I want to create graphs like the example below: The variable names var1-var4 in my...

    Started by teapot‎, 06-21-2016 03:00 PM
    • Replies: 0
    • Views: 646
    06-21-2016, 03:00 PM Go to last post
  33. Estimating treatment effect using movestay command

    Hello, I want to use the movestay command in Stata but my data is complicated and Im unsure how to proceed. I would like to estimate the...

    Started by MichielvanRossum‎, 06-05-2016 08:27 AM
    movestay, stata, switching regression
    • Replies: 1
    • Views: 1,429
    06-08-2016, 11:09 AM Go to last post
  34. Write an equation in mata format

    Dear stata users, I am trying to setup the following equation in mata format: C1 + C2*((lnx)^2- C3)+ C4* ((lnx)^2*lnx- C5) I have attached the...

    Started by ledzep‎, 05-29-2016 10:12 AM
    • Replies: 0
    • Views: 791
    05-29-2016, 10:12 AM Go to last post
  35. Marginal effects after logistic

    I have all binary/categorical variables, and I am trying to decide between mfx/margins to obtain marginal effects in Stata. They seem to provide...

    Started by oncearunner‎, 04-14-2016 12:41 PM
    logistic regression stata, marginal effects
    • Replies: 2
    • Views: 991
    05-28-2016, 07:07 AM Go to last post
  36. svyset

    Hi, I have a database in which there are patients. Sample size is 1000. (100% response due to spare sample/replacement etc) 20 GPs were involved....

    Started by Drone999‎, 05-26-2016 08:18 AM
    survey analysis, survey weights
    • Replies: 0
    • Views: 621
    05-26-2016, 08:18 AM Go to last post
  37. Overlaying two histograms/lines?

    Hi all! I am going nuts in trying to do a graph which to me looks like the basic graph ever. Basically I have two variables: the score that the...

    Started by belfagor71‎, 06-25-2013 06:00 AM
    • Replies: 5
    • Views: 11,042
    05-25-2016, 09:32 AM Go to last post
  38. Pre and post with control: Difference in median

    I created the difference between pre and post UOF counts and then generate a variable that represents the median for each group. base on my...

    Started by Marvin85‎, 05-17-2016 04:01 PM
    median difference
    • Replies: 7
    • Views: 1,121
    05-19-2016, 11:51 AM Go to last post
  39. Stata: Drop company if last stock value of prior year is smaller than a certain value

    Hey all, I have a CRISP dataset with daily stock values for campanies from the first of december 2010 until the end of 2011. Now I need to...

    Started by Prometheus94‎, 05-15-2016 10:32 AM
    • Replies: 0
    • Views: 622
    05-15-2016, 10:32 AM Go to last post
  40. regression OLS e IV

    I need estimate a model specification by OLS and a model IV and endogeneity (cross-sectional data). When I try to estimate OLS, the standard errors...

    Started by Carla VN‎, 05-13-2016 02:25 PM
    • Replies: 0
    • Views: 602
    05-13-2016, 02:25 PM Go to last post
  41. Problem Logistic regression

    Hi, I want to do a logistic regression on proportional data in Stata that I've done with R before. So in R I used cbind to combine the two rows...

    Started by Buckyball‎, 05-10-2016 08:20 AM
    • Replies: 0
    • Views: 675
    05-10-2016, 08:20 AM Go to last post
  42. Help making a basic but large table in Stata

    Thanks for reading :wave: I am a beginner :confused: and trying to make descriptive tables. I am trying to create an 18x18 cross-table. The 18...

    Started by statakiss‎, 04-27-2016 03:51 AM
    big data in stata, cross tabulation, table
    • Replies: 0
    • Views: 833
    04-27-2016, 03:51 AM Go to last post
  43. Stata: Test that the difference between two groups = -1

    Does anyone know how to test the hypothesis that the difference between people without and with kids = -1 per night in Stata? I have the data set...

    Started by hbossut‎, 04-23-2016 01:42 PM
    alternative hypothesis, hypothesis, null hypothesis, stata, test
    • Replies: 0
    • Views: 728
    04-23-2016, 01:42 PM Go to last post
  44. Moved: Graphically check linearity in logit regression

    Started by Phaedrus‎, 07-21-2014 07:50 AM
    • Replies: -
    • Views: -
    04-19-2016, 10:59 AM Go to last post
  45. Regression with missing data

    Hi all So I just want to do a quick linear regression, but when I initially tried I had an error (r(2000 no observations). I've realised my issue...

    Started by gga10hr‎, 04-15-2016 01:53 PM
    linear regression, missing values
    • Replies: 1
    • Views: 725
    04-15-2016, 02:18 PM Go to last post
  46. Matrix multiplication operation in stata

    Hi I declared the following matrix mat p_h1=J(22,3,.) that contains some numbers. And now i need this simple task. Create another matrix with the...

    Started by jfca283‎, 04-12-2016 11:09 AM
    • Replies: 0
    • Views: 689
    04-12-2016, 11:09 AM Go to last post
  47. Drop duplicates by criteria :confused:

    Hello, i want to drop duplicates, but using a criteria. For example i am working with a dataset who has id for a lot of student, but the same student...

    Started by Banana_fish‎, 04-11-2016 06:15 PM
    • Replies: 0
    • Views: 706
    04-11-2016, 06:15 PM Go to last post
  48. Can the if option of xtreg unbalance Panel Data?

    Hi everyone, I have a tricky question regarding the way xtreg works. It amy also be a very simple question Using a balanced Panel Data with 10...

    Started by Alexandra 82‎, 04-03-2016 10:16 AM
    balanced data, unbalanced data, xtreg
    • Replies: 1
    • Views: 924
    04-04-2016, 02:47 AM Go to last post
  49. 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: 20
    • Views: 18,298
    04-01-2016, 02:18 PM Go to last post
  50. no observations r(2000)

    Dear all, I have just started using Stata for a time series analysis. However, there has already been to much failure before even started the acutal...

    Started by beckham-7‎, 10-25-2011 04:30 AM
    • Replies: 4
    • Views: 13,248
    03-31-2016, 01:21 PM Go to last post
  51. generating average with missing more than X values

    hi all, let's say i want to take the average of 5 scores for class tests for each student in a class. the data looks like the below EXCEPT...

    Started by bvowe‎, 01-05-2016 09:59 AM
    average, data, stata
    • Replies: 3
    • Views: 1,059
    03-30-2016, 10:52 AM Go to last post
  52. Extrapolation methods book

    Can someone recommend me some good book about extrapolation (ideally with STATA) which do not cover only survival but also extrapolations of other...

    Started by Vlajkony‎, 03-27-2016 11:10 AM
    • Replies: 1
    • Views: 1,496
    03-27-2016, 05:22 PM Go to last post
  53. Unhappy How program a Propensity Score Matching?

    Hello I need to "program" a Propensity Score Matching, but using only loops and not pscore or other command, my problem is that i dont now how...

    Started by Banana_fish‎, 03-16-2016 10:44 AM
    • Replies: 1
    • Views: 1,093
    03-16-2016, 11:53 AM Go to last post
  54. Adding up values of variables

    Hey guys, I got a rather complicated problem: I have two variables, ID and Country ID Country 11 US 11 ...

    Started by Andreas Hofer‎, 03-10-2016 09:59 AM
    calculation, stata, variable
    • Replies: 0
    • Views: 1,009
    03-10-2016, 09:59 AM Go to last post
  55. Question how join two tables into one

    for example i have var: var1 1 2 3 i want to add new obs . local new = _N + 1 . set obs `new'

    Started by wolf7808‎, 03-09-2016 10:24 AM
    • Replies: 0
    • Views: 693
    03-09-2016, 10:24 AM Go to last post
  56. Save graph vs saving

    Hello guys, What is the different between the "saving" options at the end of the command and the new command save graph filename? I have a do...

    Started by Marvin85‎, 03-01-2016 12:38 PM
    graph, histogram save
    • Replies: 2
    • Views: 996
    03-04-2016, 06:57 AM Go to last post
  57. Learning to make programs

    Hey guys. So I'm learning to program ado's and I have a question. Say I want to make a random joke generator in stata from a list of 100 jokes....

    Started by starpen‎, 02-27-2016 02:09 PM
    ado, code, program
    • Replies: 0
    • Views: 888
    02-27-2016, 02:09 PM Go to last post
  58. Date variable- only month

    Hi Guys, I have a date variable, save in the type below. example 03 Jul 14 DateToday long %dD_m_Y I would like to...

    Started by Marvin85‎, 07-24-2014 11:05 AM
    date, month
    • Replies: 5
    • Views: 1,630
    02-23-2016, 09:34 AM Go to last post
  59. Help with data management please

    Hi, I have a dataset that are all string and missing data are as NA. I am trying to convert it to numeric with encode command. I don't know how to...

    Started by Newcomer‎, 02-15-2016 05:19 AM
    • Replies: 1
    • Views: 919
    02-15-2016, 07:27 AM Go to last post
  60. ID-number in Stata

    Dear you, I might have a stupid question, but I have not found the answer on google, and I hope someone can help. I have a dataset where...

    Started by sju‎, 02-07-2016 11:02 AM
    identification, social security number
    • Replies: 1
    • Views: 966
    02-12-2016, 02:42 AM Go to last post

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