Add options for "less than" number of observations

[thjendk]

The CreateTableOne function is often used to summarize patient information. When such summary information in categorical values reached less than 5-10 observations, the data must be censored as so "< 5" or "< 10". You could specify the number of minimum observations in a numeric argument.

Would it be possible to add this functionally to the CreateTableOne function? It would be a large improvement in my workflow.