Heel outputs are generated by Heel rules.
Rules have IDs.
The output in AchillesWeb does not list all columns that are useful.
In R, you can run command:
fetchAchillesHeelResults(connectionDetails,resultsDatabaseSchema)
or see the table in the database.
(see bottom part of section here https://github.com/OHDSI/Achilles/blob/master/README.md#getting-started
To see details of each rule, see this file:
either on github (make sure you scroll to the right) https://github.com/OHDSI/Achilles/blob/master/inst/csv/achilles_rule.csv
or by downloading it via this link: (save link as)
https://raw.githubusercontent.com/OHDSI/Achilles/master/inst/csv/achilles_rule.csv
As Jon said - it is doing some simple trend analysis.
402 is an analysis_id (at which achilles pre-computation it is looking)