| append | Append datasets | 
| clear | Helper functions | 
| codebook | Describe the data | 
| day | Format Dates | 
| duplicates | Report, tag or drop the duplicate observations | 
| egen | Categorize a numerical variable | 
| expand2 | Duplicate observations within a dataframe | 
| expandfreq | Expand '2x2 table' into 'data.frame' | 
| expandtbl | Expand '2x2 table' into 'data.frame' | 
| formatDate | Format Dates | 
| generate | Create a new variable | 
| helpers | Helper functions | 
| hettest | Linear Regression Model | 
| histogram | Histograms with overlay normal curve | 
| ilog | Create a copy of your output in a text format | 
| ilog.clear | Create a copy of your output in a text format | 
| ilog.close | Create a copy of your output in a text format | 
| is.Date | Format Dates | 
| label | Attach labels to data and variables | 
| ladder | Linear Regression Model | 
| lag.data.frame | Lag a variable | 
| linkTest | Linear Regression Model | 
| logit | Logistic Regression Model | 
| mhor | Calculating Odds Ratios | 
| mhrr | Calculating Risk Ratios | 
| month | Format Dates | 
| N_ | Count from 'n_' to 'N_' | 
| n_ | Count from 'n_' to 'N_' | 
| plot.regress | Linear Regression Model | 
| predict.regress | Linear Regression Model | 
| recode | Recode a variable | 
| regress | Linear Regression Model | 
| replace | Change contents of an existing variable | 
| scatterPlotMatrix | Scatter plot matrices with histogram and correlation coefficients | 
| strate | Calculate Incidence Rates from time-to-event data | 
| summ | Summary statistics | 
| summary | Table Format for Publication | 
| summary.summ | Table Format for Publication | 
| summary.tab | Table Format for Publication | 
| tab | Tabulation | 
| year | Format Dates |