Pathology requirements UNITS
Thomas It is more that units match Force/Length^2 for pressure and it is an expression that the property of pressure is the property of Force per property of area - this does allow a very wide range of units to be used if that is the requirement. I am starting to see that things do get complicated out there in Unitsville. Cheers, Sam Can we not work on a UNITS module where a test can be attached to a number of units where the conversion is not available. A clinician does not want to have to relearn the unit for the convenience of the application. I wonder if units should be considered part of a localsation profile? Currently you can specify units in an archetype in two ways: a) as the actual units you want to allow, e.g. units matches {mm[Hg]}, units matches {km, mi} b) property matches {pressure}, property matches {length} A nice alternative that Sam has thought of is: c) property matches {FORCE/LENGTH^2} -- same as pressure property matches {LENGTH/TIME} We are currentl working on including this in ADL. - thomas - If you have any questions about using this list, please send a message to d.lloyd at openehr.org - If you have any questions about using this list, please send a message to d.lloyd at openehr.org
Pathology requirements UNITS
Bhupinder This is an interesting idea...but it raises issues as you have to have normal ranges for each of these. I do not see why the results could not be duplicated in multiple units is required - at present we do not have the ability to add multiple values to a single element apart from as reference ranges. What do others think? I think Labs will probably push back on this one. Sam -Original Message- From: owner-openehr-technical at openehr.org [mailto:owner-openehr-technical at openehr.org]On Behalf Of Bhupinder Singh Sent: Thursday, 23 October 2003 1:30 PM To: Sam Heard; Openehr-Technical Subject: Re: Pathology requirements UNITS Can we not work on a UNITS module where a test can be attached to a number of units where the conversion is not available. A clinician does not want to have to relearn the unit for the convenience of the application. Bhupinder - Original Message - From: Sam Heard sam.heard at bigpond.com To: Openehr-Technical openehr-technical at openehr.org Sent: Wednesday, October 22, 2003 4:02 PM Subject: Pathology requirements UNITS UNITS There are a lot of units out there - it has been our idea to build a constraint model on units based on the property being measured. A good example is frequency can be '/{time unit}' (e.g. /min, /hr, /s) or 'Hz'. It is hoped that we can translate from one to the other as much as possible on this basis. It has come to my attention just how many units are out there and that some units are not translatable to another unit even when the property is the same without further information. The best known example is gm percent - which is the same as gm/100ml or gm/dl. This is a concentration but it is not possible to know the amount of substance (moles) without knowing the molecular weight of the substance. This means we will have to have units available in a property that are not translatable. We could separate these to MASS CONCENTRATION and CONCENTRATION as some have done - but I think clinicians will want to choose from as small as list as possible. We need some work done in this area and there are a number of documents available to get this as tidy as we can. Cheers, Sam Dr Sam Heard Ocean Informatics, openEHR Co-Chair, EHR-SIG, HL7 Chair EHR IT-14-9-2, Standards Australia Hon. Senior Research Fellow, UCL, London 105 Rapid Creek Rd Rapid Creek NT 0810 Ph: +61 417 838 808 sam.heard at bigpond.com www.openEHR.org www.HL7.org __ - If you have any questions about using this list, please send a message to d.lloyd at openehr.org - If you have any questions about using this list, please send a message to d.lloyd at openehr.org - If you have any questions about using this list, please send a message to d.lloyd at openehr.org
Pathology requirements UNITS
Sam et al, At least in the Australian context there are regulatory requirements to report in Standard units only. So reporting the same result in multiple different units is not possible. What the standard units are, will vary across different realms Regards Vince Dr Vincent McCauley - Original Message - From: Sam Heard sam.he...@bigpond.com To: Bhupinder Singh bobdog at sancharnet.in; Openehr-Technical openehr-technical at openehr.org Sent: Friday, October 24, 2003 11:35 Subject: RE: Pathology requirements UNITS Bhupinder This is an interesting idea...but it raises issues as you have to have normal ranges for each of these. I do not see why the results could not be duplicated in multiple units is required - at present we do not have the ability to add multiple values to a single element apart from as reference ranges. What do others think? I think Labs will probably push back on this one. Sam -Original Message- From: owner-openehr-technical at openehr.org [mailto:owner-openehr-technical at openehr.org]On Behalf Of Bhupinder Singh Sent: Thursday, 23 October 2003 1:30 PM To: Sam Heard; Openehr-Technical Subject: Re: Pathology requirements UNITS Can we not work on a UNITS module where a test can be attached to a number of units where the conversion is not available. A clinician does not want to have to relearn the unit for the convenience of the application. Bhupinder - Original Message - From: Sam Heard sam.heard at bigpond.com To: Openehr-Technical openehr-technical at openehr.org Sent: Wednesday, October 22, 2003 4:02 PM Subject: Pathology requirements UNITS UNITS There are a lot of units out there - it has been our idea to build a constraint model on units based on the property being measured. A good example is frequency can be '/{time unit}' (e.g. /min, /hr, /s) or 'Hz '. It is hoped that we can translate from one to the other as much as possible on this basis. It has come to my attention just how many units are out there and that some units are not translatable to another unit even when the property is the same without further information. The best known example is gm percent - which is the same as gm/100ml or gm/dl. This is a concentration but it is not possible to know the amount of substance (moles) without knowing the molecular weight of the substance. This means we will have to have units available in a property that are not translatable. We could separate these to MASS CONCENTRATION and CONCENTRATION as some have done - but I think clinicians will want to choose from as small as list as possible. We need some work done in this area and there are a number of documents available to get this as tidy as we can. Cheers, Sam Dr Sam Heard Ocean Informatics, openEHR Co-Chair, EHR-SIG, HL7 Chair EHR IT-14-9-2, Standards Australia Hon. Senior Research Fellow, UCL, London 105 Rapid Creek Rd Rapid Creek NT 0810 Ph: +61 417 838 808 sam.heard at bigpond.com www.openEHR.org www.HL7.org __ - If you have any questions about using this list, please send a message to d.lloyd at openehr.org - If you have any questions about using this list, please send a message to d.lloyd at openehr.org - If you have any questions about using this list, please send a message to d.lloyd at openehr.org - If you have any questions about using this list, please send a message to d.lloyd at openehr.org
Pathology requirements UNITS
Bhupinder Singh bobdog at sancharnet.in wrote: Can we not work on a UNITS module where a test can be attached to a number of units where the conversion is not available. A clinician does not want to have to relearn the unit for the convenience of the application. I wonder if units should be considered part of a localsation profile? Currently you can specify units in an archetype in two ways: a) as the actual units you want to allow, e.g. units matches {mm[Hg]}, units matches {km, mi} b) property matches {pressure}, property matches {length} A nice alternative that Sam has thought of is: c) property matches {FORCE/LENGTH^2} -- same as pressure property matches {LENGTH/TIME} We are currentl working on including this in ADL. - thomas - If you have any questions about using this list, please send a message to d.lloyd at openehr.org
Pathology requirements UNITS
Can we not work on a UNITS module where a test can be attached to a number of units where the conversion is not available. A clinician does not want to have to relearn the unit for the convenience of the application. Bhupinder - Original Message - From: Sam Heard sam.he...@bigpond.com To: Openehr-Technical openehr-technical at openehr.org Sent: Wednesday, October 22, 2003 4:02 PM Subject: Pathology requirements UNITS UNITS There are a lot of units out there - it has been our idea to build a constraint model on units based on the property being measured. A good example is frequency can be '/{time unit}' (e.g. /min, /hr, /s) or 'Hz'. It is hoped that we can translate from one to the other as much as possible on this basis. It has come to my attention just how many units are out there and that some units are not translatable to another unit even when the property is the same without further information. The best known example is gm percent - which is the same as gm/100ml or gm/dl. This is a concentration but it is not possible to know the amount of substance (moles) without knowing the molecular weight of the substance. This means we will have to have units available in a property that are not translatable. We could separate these to MASS CONCENTRATION and CONCENTRATION as some have done - but I think clinicians will want to choose from as small as list as possible. We need some work done in this area and there are a number of documents available to get this as tidy as we can. Cheers, Sam Dr Sam Heard Ocean Informatics, openEHR Co-Chair, EHR-SIG, HL7 Chair EHR IT-14-9-2, Standards Australia Hon. Senior Research Fellow, UCL, London 105 Rapid Creek Rd Rapid Creek NT 0810 Ph: +61 417 838 808 sam.heard at bigpond.com www.openEHR.org www.HL7.org __ - If you have any questions about using this list, please send a message to d.lloyd at openehr.org - If you have any questions about using this list, please send a message to d.lloyd at openehr.org