CODEWITHSUNDEEP
rlogistic-regressionplmcoefficientsmissing-features
GabCarbo
GabCarbo

Reputation: 1

plm omitting coefficients while fitting a model

I installed and loaded plm, and am using it for classical work about FE, RE etc. models. I cannot explain, when I fit a model, only some coefficient are worked out, as the others didn't exist. I'm lost.

'''

model_depr <- plm::plm(depression ~ drug + diagnose, data = depression, type = "within", effect = "individual")

summary(model_depr) '''

The fit is (new is one of the two values of drug):

'''

Call: plm::plm(formula = depression ~ drug + diagnose, data = depression, effect = "individual", type = "within")

Balanced Panel: n = 2, T = 2, N = 1020

Residuals: Min. 1st Qu. Median 3rd Qu. Max. -0.76692 -0.49981 0.23308 0.41272 0.67983

Coefficients: Estimate Std. Error t-value Pr(>|t|) drugnew 0.179633 0.029736 6.0409 2.147e-09

Signif. codes: 0 ‘’ 0.001 ‘’ 0.01 ‘’ 0.05 ‘.’ 0.1 ‘ ’ 1

Total Sum of Squares: 236.71 Residual Sum of Squares: 228.51 R-Squared: 0.034639 Adj. R-Squared: 0.032741 F-statistic: 36.4923 on 1 and 1017 DF, p-value: 2.1472e-09 '''

Upvotes: 0

Views: 167

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