Re: [gpc-informatics] #155: Define Encounter type terms and Epic ETL

2015-01-22 Thread GPC Informatics
#155: Define Encounter type terms and Epic ETL
--+--
 Reporter:  lv|   Owner:  huhickman
 Type:  design-issue  |  Status:  assigned
 Priority:  major |   Milestone:  drn-basic-query
Component:  data-stds |  Resolution:
 Keywords:|  Blocked By:
 Blocking:  160, 178  |
--+--
Changes (by dconnolly):

 * milestone:  data-domains3 = drn-basic-query


Comment:

 encounter type is needed for CDM ETL

--
Ticket URL: 
http://informatics.gpcnetwork.org/trac/Project/ticket/155#comment:8
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Re: [gpc-informatics] #155: Define Encounter type terms and Epic ETL

2014-11-12 Thread GPC Informatics
#155: Define Encounter type terms and Epic ETL
--+
 Reporter:  lv|   Owner:  huhickman
 Type:  design-issue  |  Status:  assigned
 Priority:  major |   Milestone:  data-domains3
Component:  data-stds |  Resolution:
 Keywords:|  Blocked By:
 Blocking:  160, 178  |
--+
Changes (by dconnolly):

 * owner:  campbell = huhickman
 * status:  reopened = assigned


Comment:

 Hubert,

 Thanks for sharing the details of UNMC's approach to encounter types
 (attachment:pcori_encounters.sql:ticket:178 and ticket:178#comment:6).
 It's reasonably clear how that query lets you compute PCORNet CDM summary
 stats on encounter type.

 But we still have to decide what encounter terms GPC will use.

 The UNMC metadata on babel (as of Nov 6 ticket:64#comment:26) doesn't seem
 to include the results under UNMC: Encounters. Do you plan to continue
 working in that direction?

--
Ticket URL: 
http://informatics.gpcnetwork.org/trac/Project/ticket/155#comment:7
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Re: [gpc-informatics] #155: Define Encounter type terms and Epic ETL (was: Define Encounter)

2014-09-29 Thread GPC Informatics
#155: Define Encounter type terms and Epic ETL
--+-
 Reporter:  lv|   Owner:  campbell
 Type:  design-issue  |  Status:  reopened
 Priority:  major |   Milestone:  data-stds-gov-plan
Component:  data-stds |  Resolution:
 Keywords:|  Blocked By:
 Blocking:  160   |
--+-
Changes (by dconnolly):

 * status:  closed = reopened
 * resolution:  invalid =
 * blocking:   = 160


Old description:

 Create a GPC definition for Encounter; may be based upon input from
 DSSNI or unique to the network.

 Discussed on the dev call 9/16/14.

New description:

 Create a GPC definition for Encounter; may be based upon input from
 DSSNI or unique to the network.

  - SQL queries to classify Epic CLARITY encounters according to type
- ''Cattails, Cerner design should follow straightforwardly''
  - term hierarchy (names, paths) for
- aggregated counts on babel
- federated queries

 initially discussed on the dev call 9/16/14.

--

Comment:

 Looks like next step could be to get details on this:

   Epic has provided an unfortunate excess of encounters such that
 administrative, billing and non-patient care events are all assigned as
 encounters.  Segregating between ED and hospitalizations as well as
 ambulatory surgery is a bit convoluted but we have sorted out the Clarity
 data structures necessary to do so.

   - [http://listserv.kumc.edu/pipermail/gpc-dev/2014q3/000373.html
 Campbell 15 Aug]

--
Ticket URL: 
http://informatics.gpcnetwork.org/trac/Project/ticket/155#comment:3
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Re: [gpc-informatics] #155: Define Encounter

2014-09-29 Thread Alex Bokov
The linked definition doesn't preclude redundant entries resulting from 
multiple encounters taking place on the same day (and these are not 
rare, at least at the two GPC sites I've worked with so far). This is 
deeper than terminology. The pragmatic question is: what should be in 
each row of the analysis-ready result-set: patient, patient-encounter, 
or patient-day?


Perhaps a study that delves deeply into the timing and ordering of 
individual specialist visits would treat each encounter as a separate 
collection of observations, even if those encounters were on the same 
day. Presumably someone with enough domain knowledge to do a study like 
that will also know how to resolve redundancies and discrepancies. I don't.


If the research question is more general, like is vital sign X 
different between patients with diagnosis A and diagnosis B? or does 
the prevalence of diagnosis Y increase in patients from demographic 
group C compared to patients from demographic group D?, I would start 
to worry about whether I sufficiently understand if it's possible and 
what it means for A, B, C, D, X, and Y to show up on /multiple 
encounters that are really administrative abstractions representing the 
same physical visit to the clinic or hospital/.


I too want to hear from clinicians about any universal rules governing 
uniqueness of observations from different encounters on the same day. 
Until then, when preparing data for analysis, I play it safe by 
collapsing visits into one row per patient-day. Codes of a given scheme 
(after being filtered for any applicable modifiers) get concatenated 
into comma- or semicolon-delimited strings (resulting in one column each 
for distinct diagnoses, procedure orders, medications, etc.) /except/ 
specific codes that the researcher has singled out for individual 
attention. Each of those gets a separate column, however many columns 
that takes. Numeric values (e.g. each type of lab result) also get 
individual columns.


I'm not advocating that the definition of encounter should or shouldn't 
be changed. Only that encounters as our systems define them aren't 
always the right thing to count for power analysis or feasibility studies.


On 09/29/2014 09:04 AM, Dan Connolly wrote:

I asked for clarification on this issue and haven't gotten any. Would somebody 
please give a specific technical reason why, for example, this Wikipedia 
definition of encounter doesn't suffice?

   Within the medical record, individual medical encounters are marked by 
discrete summations of a patient's medical history by a physician, nurse 
practitioner, or physician assistant and can take several forms.
  -- http://en.wikipedia.org/wiki/Medical_record#Medical_encounters



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Re: [gpc-informatics] #155: Define Encounter

2014-09-16 Thread GPC Informatics
#155: Define Encounter
--+-
 Reporter:  lv|   Owner:  campbell
 Type:  design-issue  |  Status:  new
 Priority:  major |   Milestone:  data-stds-gov-plan
Component:  data-stds |  Resolution:
 Keywords:|  Blocked By:
 Blocking:|
--+-
Changes (by dconnolly):

 * cc: gpc-dev (removed)
 * cc: gpc-dev@… (added)


Comment:

 This looks like #120; how is it different?

--
Ticket URL: 
http://informatics.gpcnetwork.org/trac/Project/ticket/155#comment:1
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