fix(mimic-iii): do not bridge paused vasopressor gaps

MetaVision vasopressor_durations collapsed rows by linkorderid with
min(starttime)/max(endtime). After a Paused status that leaves a gap
(median ~1h), that incorrectly counted the pause as infusion time.
Keep each inputevents_mv row as its own interval; vasomv_grp still merges
contiguous/overlapping intervals.

Fixes #1808

Author: acnimma

mimic-iii/concepts/durations/vasopressor_durations.sql

@@ -40,7 +40,7 @@ with io_cv as
 , io_mv as
 (
   select
-    icustay_id, linkorderid, starttime, endtime
+    icustay_id, starttime, endtime
   FROM `physionet-data.mimiciii_clinical.inputevents_mv` io
   -- Subselect the vasopressor ITEMIDs
   where itemid in
@@ -259,15 +259,17 @@ WHERE NOT EXISTS(SELECT * FROM vasocv s2
 GROUP BY s1.icustay_id, s1.starttime
 ORDER BY s1.icustay_id, s1.starttime
 )
--- now we extract the associated data for metavision patients
--- do not need to group by itemid because we group by linkorderid
+-- MetaVision rows: keep each order interval as-is.
+-- Do not collapse by linkorderid: Paused rows often leave multi-hour gaps
+-- before the next row of the same linkorderid (#1808). vasomv_grp still
+-- merges contiguous/overlapping intervals afterward.
 , vasomv as
 (
   select
-    icustay_id, linkorderid
-    , min(starttime) as starttime, max(endtime) as endtime
+    icustay_id
+    , starttime
+    , endtime
   from io_mv
-  group by icustay_id, linkorderid
 )
 , vasomv_grp as
 (

mimic-iii/concepts_duckdb/durations/vasopressor_durations.sql

@@ -30,7 +30,6 @@ WITH io_cv AS (
 ), io_mv AS (
   SELECT
     icustay_id,
-    linkorderid,
     starttime,
     endtime
   FROM mimiciii.inputevents_mv AS io
@@ -166,13 +165,9 @@ WITH io_cv AS (
 ), vasomv AS (
   SELECT
     icustay_id,
-    linkorderid,
-    MIN(starttime) AS starttime,
-    MAX(endtime) AS endtime
+    starttime,
+    endtime
   FROM io_mv
-  GROUP BY
-    icustay_id,
-    linkorderid
 ), vasomv_grp AS (
   SELECT
     s1.icustay_id,

mimic-iii/concepts_postgres/durations/vasopressor_durations.sql

@@ -31,7 +31,6 @@ WITH io_cv AS (
 ), io_mv /* select only the ITEMIDs from the inputevents_mv table related to vasopressors */ AS (
   SELECT
     icustay_id,
-    linkorderid,
     starttime,
     endtime
   FROM mimiciii.inputevents_mv AS io
@@ -169,16 +168,12 @@ WITH io_cv AS (
   ORDER BY
     s1.icustay_id NULLS FIRST,
     s1.starttime NULLS FIRST
-), vasomv /* now we extract the associated data for metavision patients */ /* do not need to group by itemid because we group by linkorderid */ AS (
+), vasomv /* keep each MetaVision interval; do not bridge Paused gaps via linkorderid (#1808) */ AS (
   SELECT
     icustay_id,
-    linkorderid,
-    MIN(starttime) AS starttime,
-    MAX(endtime) AS endtime
+    starttime,
+    endtime
   FROM io_mv
-  GROUP BY
-    icustay_id,
-    linkorderid
 ), vasomv_grp AS (
   SELECT
     s1.icustay_id,