"almost same patient" check

not implemented yet, will be implemented with other multi-encounter checks.

If records match on all of the following they almost certainly are for the same patient; if they only match on some they are likely for the same patient with a data entry error in the differing field.

Flag records that match on (all - 1) fields of the following:

• PHIN
• first name & last name
• DOB
• sex
• chart number (if same hospital)

We would likely want a way to exclude legitimately similar patients from future comparisons.