Apparent issue with Race variable

This issue is to report an issue that appears to be specific to Race but may apply to other string variables (not tested). The issue is defined below.

For COHORT:1 (year = 2020), the following multivariate query returns results.

curl -X 'POST' \
  'https://icees-pcd.renci.org/cohort/COHORT%3A6/multivariate_feature_analysis?year=2020' \
  -H 'accept: text/tabular' \
  -H 'Content-Type: application/json' \
  -d '[
  "TotalEDInpatientVisits",
  "Sex2",
  "Race"
]'

For COHORT:4 (year = 2020, Race = Caucasian, AA, Asian): the same query returns an error.

curl -X 'POST' \
  'https://icees-pcd.renci.org/cohort/COHORT%3A4/multivariate_feature_analysis?year=2020' \
  -H 'accept: text/tabular' \
  -H 'Content-Type: application/json' \
  -d '[
  "TotalEDInpatientVisits",
  "Sex2",
  "Race"
]'


+---------+
| error   |
+=========+
| 'value' |
+---------+

For COHORT:6 (year=2020. TotalEDInpatientVisits <= 9), the same query returns results.

curl -X 'POST' \
  'https://icees-pcd.renci.org/cohort/COHORT%3A6/multivariate_feature_analysis?year=2020' \
  -H 'accept: text/tabular' \
  -H 'Content-Type: application/json' \
  -d '[
  "TotalEDInpatientVisits",
  "Sex2",
  "Race"
]'

It appears that Race cannot be included in the multivariate call if it was also selected for cohort creation. The same issue does not apply to TotalEDInpatientVisits, but rather appears to be specific to Race.

The issue is generalizable. A 2x2 Sex2 x AsthmaDx query returns results for COHORT:1 and COHORT:6 but returns the same value error for COHORT:4.

ExposuresProvider / icees-api

Apparent issue with Race variable #301