tag:blogger.com,1999:blog-733074358901582680.post775720501404863543..comments2024-03-23T05:28:35.472-04:00Comments on Healthcare Standards: A best practice for data element descriptionsKeith W. Boonehttp://www.blogger.com/profile/16883038460949909300noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-733074358901582680.post-84854327177107554502013-01-16T00:26:06.941-05:002013-01-16T00:26:06.941-05:00Hi,
Can help me understand DHIS 2 (dhis2.org) in ...Hi,<br /><br />Can help me understand DHIS 2 (dhis2.org) in a hospital mode. We have got Oracle database server, how would link dhis2 directly to db.<br /><br />Regards,<br /><br />Chandrakant BAnonymoushttps://www.blogger.com/profile/07448320885779351270noreply@blogger.comtag:blogger.com,1999:blog-733074358901582680.post-84508977827606347642010-11-11T14:25:23.650-05:002010-11-11T14:25:23.650-05:00One thing to watch out for is that the semantics o...One thing to watch out for is that the semantics of concepts in controlled terminologies is very much dependent on the assumptions of the problem space as understood by the terminology developer. Thus LOINC shoehorns everything into its six axes; SNOMED has its concept hierarchies.<br /><br />In your case, the concepts are driven by the specific structural context - the particular module. In fact, the semantics of the data element is only formally valid in that context, as recognized by the ID being tied to the module. This poses two challenges. <br /><br />1 - The mapping of the data element to a reference vocabulary concept (e.g., from SNOMED or LOINC) may not be precise. For instance, we might map a data element value for the site of a measurement to a SNOMED term for a disease, with the intented meaning of the <i>site</i> of the disease (e.g., "the volume of the [cardiac effusion]"). In the context of a particular module construct we often do these 'type castings', and in fact that is part of the local semantics of the data element.<br /><br />2 - Because each data element is only locally defined, it is hard to connect to similar or identical data elements that happen to be defined in other modules, except that they both map to the same reference vocabulary concept (maybe - see item 1).Harry Solomonhttps://www.blogger.com/profile/01135539798417593756noreply@blogger.com