From OHDSI

[tibbben]

• get bounding boxes of all loaded datasets
• get list of variables and types from database
• look into common data elements (NIH)
• Jimmy's work https://doi.org/10.1016/j.envsoft.2019.01.007
• look into variable cascade representation (DDI and others)
• Croissant metadata models, Science on Schema.org
• schema.org statistical variable
• where is geocoding error? are there hotspots?

[tibbben]

OMOP EPA conversation

• get more blurb about international symposium

scripts to get all download points - meet with Jake on Wednesday

Annual variable

pollutant
measurement frequency/count
various temporal values (day, month, year, 3 year, 5 year)
various geospatial scales (1km, 10km, 100km)

how are annuals calculated? calendar year?

Different kinds of measurements:
Federal Reference Method (gold standard)

Only keep AQS daily data with 50% or more observations
frequency of measurement for monitors - include in attributes somehow for daily data
use ISO 19115-1:2014 for temporal spans?? frequencies??

model data??

[tibbben]

OHDSI GIS

• 2019 5-year AQS data (plus other years)
• http://www.t3db.ca
• http://www.t3db.ca/w/databases
• https://www.cas.org/cas-data/cas-registry
• EPA - census/zip error estimation
• see EPA temporal notes above / review / look at ISO 19115-1:2014

[tibbben]

Develop a generic process for automatically generating shape information for use in the OHDSI GIS tool chain for 2 types of tessellations of geographic surfaces:
A regular hexagonal tessellation that meets a minimum threshold sufficient to mitigate patient identification risk according to an arbitrary user-defined standard of acceptable identification risk
A voronoi tessellation that meets a minimum threshold sufficient to mitigate patient identification risk according to an arbitrary user-defined standard of acceptable identification risk

Discreet Global Grids

• https://ogcapi.ogc.org/dggs/