Continuing basic analysis + comorbidity

[trangdata]

• [x] Discuss how to define "before" and "after" admission on Friday call, Day 0?
• [x] Add readmitted to Table 1
• [x] Re-compute length of stays? Currently: last discharge date - admission date.
• [x] Examine group of patients with no re-admission/patients who survived/colored by severity, etc.
• [x] Refine basic analysis script
• [ ] Wrap into a package

Comorbidity repo: https://github.com/meghutch/4CE_Comorbidity_Mapping

No meeting next two weeks. Will update progress via Slack until Dec 9.

[trangdata]

moved remaining items to #4