closes OHDSI/Themis #121

inst/csv/OMOP_CDMv5.3_Field_Level.csv

@@ -180,7 +180,7 @@ observation,unit_source_value,No,varchar(50),This field houses the verbatim valu
 observation,qualifier_source_value,No,varchar(50),This field houses the verbatim value from the source data representing the qualifier of the Observation that occurred.,This code is mapped to a Standard Condition Concept in the Standardized Vocabularies and the original code is stored here for reference.,No,No,NA,NA,NA,NA,NA
 death,person_id,Yes,integer,NA,NA,No,Yes,PERSON,PERSON_ID,NA,NA,NA
 death,death_date,Yes,date,The date the person was deceased.,"If the precise date include day or month is not known or not allowed, December is used as the default month, and the last day of the month the default day. For additional conventions related to this field, please refer to the [THEMIS repository](https://ohdsi.github.io/Themis/tag_death_date.html). ",No,No,NA,NA,NA,NA,NA
-death,death_datetime,No,datetime,NA,If not available set time to midnight (00:00:00),No,No,NA,NA,NA,NA,NA
+death,death_datetime,No,datetime,NA,"If you have date and time of death, populate death_datetime, otherwise leave NULL",No,No,NA,NA,NA,NA,NA
 death,death_type_concept_id,No,integer,"This is the provenance of the death record, i.e., where it came from. It is possible that an administrative claims database would source death information from a government file so do not assume the Death Type is the same as the Visit Type, etc.",Use the type concept that be reflects the source of the death record. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Type+Concept&standardConcept=Standard&page=1&pageSize=15&query=).,No,Yes,CONCEPT,CONCEPT_ID,Type Concept,NA,NA
 death,cause_concept_id,No,integer,"This is the Standard Concept representing the Person's cause of death, if available.","There is no specified domain for this concept, just choose the Standard Concept Id that best represents the person's cause of death.",No,Yes,CONCEPT,CONCEPT_ID,NA,NA,NA
 death,cause_source_value,No,varchar(50),NA,"If available, put the source code representing the cause of death here.",No,No,NA,NA,NA,NA,NA

inst/csv/OMOP_CDMv5.4_Field_Level.csv

@@ -192,7 +192,7 @@ observation,observation_event_id,No,integer,"If the Observation record is relate
 observation,obs_event_field_concept_id,No,integer,"If the Observation record is related to another record in the database, this field is the CONCEPT_ID that identifies which table the primary key of the linked record came from.",Put the CONCEPT_ID that identifies which table and field the OBSERVATION_EVENT_ID came from.,No,Yes,CONCEPT,CONCEPT_ID,NA,NA,NA
 death,person_id,Yes,integer,NA,NA,No,Yes,PERSON,PERSON_ID,NA,NA,NA
 death,death_date,Yes,date,The date the person was deceased.,"If the precise date include day or month is not known or not allowed, December is used as the default month, and the last day of the month the default day. For additional conventions related to this field, please refer to the [THEMIS repository](https://ohdsi.github.io/Themis/tag_death_date.html). ",No,No,NA,NA,NA,NA,NA
-death,death_datetime,No,datetime,NA,If not available set time to midnight (00:00:00),No,No,NA,NA,NA,NA,NA
+death,death_datetime,No,datetime,NA,"If you have date and time of death, populate death_datetime, otherwise leave NULL",No,No,NA,NA,NA,NA,NA
 death,death_type_concept_id,No,integer,"This is the provenance of the death record, i.e., where it came from. It is possible that an administrative claims database would source death information from a government file so do not assume the Death Type is the same as the Visit Type, etc.",Use the type concept that be reflects the source of the death record. [Accepted Concepts](https://athena.ohdsi.org/search-terms/terms?domain=Type+Concept&standardConcept=Standard&page=1&pageSize=15&query=). A more detailed explanation of each Type Concept can be found on the [vocabulary wiki](https://github.com/OHDSI/Vocabulary-v5.0/wiki/Vocab.-TYPE_CONCEPT).,No,Yes,CONCEPT,CONCEPT_ID,Type Concept,NA,NA
 death,cause_concept_id,No,integer,"This is the Standard Concept representing the Person's cause of death, if available.","There is no specified domain for this concept, just choose the Standard Concept Id that best represents the person's cause of death.",No,Yes,CONCEPT,CONCEPT_ID,NA,NA,NA
 death,cause_source_value,No,varchar(50),NA,"If available, put the source code representing the cause of death here.",No,No,NA,NA,NA,NA,NA