stargazer_stat_code_list: stargazer: list of statistic codes
In Anoopsinghrawat/test: Well-Formatted Regression and Summary Statistics Tables

The following character strings can be used in the keep.stat and omit.stat arguments of the stargazer command.

`"all"`	all statistics
`"adj.rsq"`	adjusted R-squared
`"aic"`	Akaike Information Criterion
`"bic"`	Bayesian Information Criterion
`"chi2"`	chi-squared
`"f"`	F statistic
`"ll"`	log-likelihood
`"logrank"`	score (logrank) test
`"lr"`	likelihood ratio (LR) test
`"max.rsq"`	maximum R-squared
`"n"`	number of observations
`"null.dev"`	null deviance
`"Mills"`	Inverse Mills Ratio
`"res.dev"`	residual deviance
`"rho"`	rho
`"rsq"`	R-squared
`"scale"`	scale
`"theta"`	theta
`"ser"`	standard error of the regression (i.e., residual standard error)
`"sigma2"`	sigma squared
`"ubre"`	Un-Biased Risk Estimator
`"wald"`	Wald test