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== review needed ==
Calculated by [[Function LOS()]] / [[Function LOS_int()]].
{{TT | this article has evil twins, need to reconcile, search for LOS Ttenbergen 21:13, 2014 October 23 (CDT)}}
{{Todo
| who = Tina 
| question = _wiki_housekeeping
* need to integrate this better and clean things out; also should make sure that queries that deal with LOS use [[Function LOS()]]
| todo_added = 2022-02-10
| todo_action = 2022-03-01
}}


{{Discuss |
* This needs to be updated for [[Accept DtTm]] and [[Arrive DtTm]], and then for [[Service tmp entry]] and [[Boarding Loc]] instead.
}}
See: [[:Category: Length of stay]]


For our purposes, '''LOS (length of stay)''' is the combined number of '''days''' a patient spent on units on which we collect data. It is '''not''' the amount of time spent in the hospital as we don't have access to hospital admit/discharge data.  
For our purposes, '''LOS (length of stay)''' is the combined number of '''days''' a patient spent on units on which we collect data. It is '''not''' the amount of time spent in the hospital as we don't have access to hospital admit/discharge data.  
Ward LOS and ICU LOS are included in our [[monthly report|monthly]], [[quarterly report|quarterly]] and [[annual report|annual]] reports.


* LOS = Discharge Date/Time – Admit Date/Time.
Depending on the type of LOS, the summary statistics namely, Mean, Median, Sum or Total are included in our various [[Reports]]; see the reports pages or the various LOS pages for details.


''For example'':
See also: [[:Category: Length of stay]]
* Admit Date/Time: 20 May 2008 11:30
* Discharge Date/Time: 21 May 2008 17:45
* LOS = 1.260  (3 decimal digit accuracy is used for individual patients, 1 digit for averages)


== different kinds of LOSs ==
== different kinds of LOSs ==
*Dr. Allan Garland and Julie met March 12, 2014 and identifed the different types of LOS currently calculated and reported as well as assigned a name to each one accordingly. There will be more to be added once when we receive the WRHA data on Hospital Admission and Discharge Dates in the near future.
*Dr. Allan Garland and Julie met March 12, 2014 and identifed the different types of LOS currently calculated and reported as well as assigned a name to each one accordingly.  
*Reminder for Julie -  Need to revisit the other LOS related categories.  [[User:JMojica|JMojica]] 12:54, 2014 March 12 (CDT)
** please tie into the reports in [[:Category:Reporting]] as well


===LOS_Record===
=== [[LOS Per Service]] ===
* refers as the Length of Stay per record
 
** simply calculated as the difference between the Discharge and Admit Dates of each record.  A record can be either a Medicine Ward or ICU patient.
=== [[LOS Per Record]] ===
** The summary reports include all patients.
 
===LOS_Cum_Wards_Hosp===
=== [[LOS per Location]] ===
 
=== [[LOS Medicine per hospital admission]] ===
* refers as Within Hospital Medicine Ward Cumulative LOS  
* refers as Within Hospital Medicine Ward Cumulative LOS  
** this is the sum of all Medicine wards' LOS_Record within one Hospital admission per hospital. It is important to determine correctly the different wards the patient stayed within a hospital admission and this is done by using the time gaps between records and/or the locations the patient came from and went to. If a patient stayed in more than one Medicine wards during his hospital admission until he left the hospital, then all his wards' LOS_Record were added.  
** this is the sum of all Medicine wards' [[LOS Per Record]] within one Hospital admission per hospital. It is important to determine correctly the different wards the patient stayed within a hospital admission and this is done by using the time gaps between records and/or the locations the patient came from and went to. If a patient stayed in more than one Medicine wards during his hospital admission until he left the hospital, then all his wards' [[LOS Per Record]] were added.  
**The summary reports  separate those who left the hospital or died  and those who went to another service  within the hospital.  
**The summary reports  separate those who left the hospital or died  and those who went to another service  within the hospital.
 
* This can be redefined as the sum of all Medicine [[LOS Per Record]] per [[Visit Admit DtTm]] and [[Person ID]].
 
===LOS_Elapse_Ward1_Hosp===
===LOS_Elapse_Ward1_Hosp===
This is not currently being reported anywhere.
*refers to the length of stay from the FIRST ward admission until the last discharge date during one hospital admission per hospital.  
*refers to the length of stay from the FIRST ward admission until the last discharge date during one hospital admission per hospital.  
**First, identify the FIRST ward the patient stayed and the last ward or ICU unit the patient stayed during a given hospital admission per hospital.
**First, identify the FIRST ward the patient stayed and the last ward or ICU unit the patient stayed during a given hospital admission per hospital.
**Then calculate the difference between the LAST Discharge Date and the First Admit Date as the elapse LOS.  
**Then calculate the difference between the LAST Discharge Date and the First Admit Date as the elapse LOS.  
**If the patient has prior stay in ICU before the first ward stay, the prior ICU stay is not included.  
**If the patient has prior stay in ICU before the first ward stay, the prior ICU stay is not included.  
**The summary reports  separate those who left the hospital or died  and those who went to another service  within the hospital.  
**The summary reports  separate those who left the hospital or died  and those who went to another service  within the hospital.
 
* This can be redefined as as "first MEDICINE [[Service tmp entry]] until last [[Dispo DtTm]] per [[Visit Admit DtTm]]" ?
 
===LOS_ICU_Region===
===LOS_ICU_Region===
This is not currently being reported anywhere.
*refers to the length of continuous stay in one or more ICU on same or different hospitals in the region  
*refers to the length of continuous stay in one or more ICU on same or different hospitals in the region  
**First, identify  the patient who had tranferred to another ICU/OR/Recovery area on same of different hosp within 48 hours and consider their ICU stays as continuous ICU stay.
**First, identify  the patient who had transferred to another ICU/OR/Recovery area on same of different hosp within 48 hours and consider their ICU stays as continuous ICU stay.
**Then calculate the difference between the Discharge Date of the last ICU stay and the  Admit Date of the First ICU stay.
**Then calculate the difference between the Discharge Date of the last ICU stay and the  Admit Date of the First ICU stay.
**The summary reports include all patients with continuous ICU stay.
**The summary reports include all patients with continuous ICU stay.


=== See also ===
Can be defined as the sum of all ICU [[LOS Per Record]] that have less than 48hrs between the previous [[Dispo DtTm]] and the next admit dttm, per [[Person_ID]].
{{Discuss | who = Julie | question = [[LOS Medicine per hospital admission]] and [[LOS Medicine per ward stay]] may duplicate content above. Do they? If we ever split these out into reporting documentation indicator pages we will need to make sure these are not duplicated. }}


== Legacy ==
== Legacy ==
===Short stay===
===Short stay===
* '''resuscitated''' patients with a short LOS used to be ignored, see [[Definition of a Critical Care Laptop Admission#Legacy]]
* '''resuscitated''' patients with a short LOS used to be ignored, see https://ccmdb.kuality.ca/index.php?title=Definition_of_a_Critical_Care_Laptop_Admission&direction=next&oldid=48590
 
===LOS vs TISS LOS ===
===LOS vs TISS LOS ===
* '''LOS vs TISS LOS''' - [[TISS76-2 hour rule]] used to mean that # of TISS days might be different than LOS. This is no longer the case as of [[TISS28]].
* '''LOS vs TISS LOS''' - [[TISS76-2 hour rule]] used to mean that # of TISS days might be different than LOS. This is no longer the case as of [[TISS28]].
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[[Category:Standards and Conventions]]
[[Category:Standards and Conventions]]
[[Category: Statistical Analysis]]
[[Category:Statistical Analysis]]
[[Category: Length of stay]]
[[Category:Length of stay]]
[[Category: Multiple Encounter linking]]
[[Category:Multiple Encounter linking]]
Retrieved from "https://ccmdb.kuality.ca/index.php?title=LOS"