Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Examples for groupings
| Grouping example | Comment |
|---|---|
| item1 | Group by value in item1. Depending on the domain path this can be used to group per site (cf. Fig. 2), time interval (year, month, quarter, day), day of week, patient etc |
| sprintf("%s_%s",item1,item2) | Combines multiple values for grouping, e.g. to get counts of antibiotic resistant isolates per bacteria species in lab values |
