All Questions
Tagged with sas categorical-data
20
questions
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68
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How to weight my data in SAS - categorical and numerical variables
I've collected data from 1000 animals (categorical and numerical variables) from 2 different farms. My problems are: one farm corresponds to 68% of my data, in some of my variables I've observed more ...
- 1
2
votes
2
answers
1k
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Interaction term with categorical predictors with more than one level
I am looking at the interaction between education (LTHS, HS, SOME COLLEGE, COLLEGE) and race (WHITE, BLACK, HISPANIC, ASIAN, NATIVE AMERICAN). I am using SAS and am including a class statement in my ...
- 21
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3
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266
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How to apply Two-Factor ANOVA in SAS when I only know the counts of each outcome?
I am confused about how to apply two-factor ANOVA when I get actually no real data, but only count for each outcome, because the dependent variable is categorical, and is binary (only 0 and 1), and I ...
- 1
1
vote
1
answer
440
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How to analyze binary categorical vs ordinal data?
Context: I have a dataset in which I am analyzing whether a patient having 1 disease (binary) influences the number of other diseases the patient has (ordinal; range = 0-7), which is the outcome ...
- 107
1
vote
0
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589
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Interpretation of results of logistic regression (Analysis of effects vs Maximum Likelihood Estimates)
I have ran a logistic regression on my data in SAS.
I get in the results a "Type 3 Analysis of Effects" which gives me a probability for my variables including a categorical variable. The probability ...
- 945
1
vote
1
answer
457
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Using contrasts in Poisson regression
The question is about using contrasts in regression analysis (here, Poisson regression with robust error variance).
We have divided the participants in our sample into 6 groups, according to their ...
- 679
1
vote
0
answers
1k
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marginal effect of dummy variable in tobit model
I have a tobit regression model in hand and I want to calculate the marginal effects at means for the dummy variables in the reg equation. There are two dummy variables in the regression equation and ...
- 207
0
votes
1
answer
804
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Proportionality assumption test (SAS) for categorical predictors
For Cox regression with all categorical predictors, I want to model time-dependent covariates (time*cov in Proc PHREG) to ...
- 1
0
votes
1
answer
190
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identify nature of missingness for categorical variables
could you please give me some hints for identifying the nature of missingness for categorical variables' missing value? I mean, I gave a fast search on google scholar but I didn't find anything ...
- 133
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0
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3k
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variable error on logistic regression/ proc catmod- Building predictive model
I am using logistic regression to fit a model with categorical/multinomial varaibles.
data-description: There are over 300 variables as independent variables, sample size is 5000 which is divided into ...
- 1
3
votes
2
answers
10k
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Is it possible for Cramer's V to be negative?
To my understanding, Cramer's V cannot be negative because of the way we define it. But here's what I got from SAS:
- 1,716
2
votes
1
answer
2k
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Why does SAS Enterprise Miner keep all dummy variables for a coded categorical variable in stepwise logistic regression?
SAS Enterprise Miner nicely creates coded dummy variables for any categorical variables used in a logistic regression model. When it performs a variable selection using stepwise sequential selection ...
2
votes
1
answer
136
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Which test to use to measure if target has been met?
The photo below is an example of the result i would like to obtain using the test which i cannot find in the article itself, i was hoping maybe any of you would know. I have tried to carry out chi ...
- 87
4
votes
1
answer
167
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Finding parts of categorical variables that "go together"
Good morning all,
I'm working on a project related to the occupations that university graduates are likely to go into. I have a large data set (N in the hundreds of thousands) where the unit of ...
- 235
2
votes
3
answers
7k
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Naive Bayesian Algorithm in R/SAS for categorical input variables?
Could anyone please let me know how to implement Naive Bayesian Algorithm in R or SAS?I have got a training dataset with all the categorical predictors and target variable(3 levels).I got to build a ...
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