[WWW - 2023.07.31]

Data Element Detail

Pregnancy-first day of the last menstrual period
Identifying and Definitional Attributes
QH 040033 v2
Data Element
Data Element
Current
01-Jul-2000
Standard
01-Jul-2000
Date of the first day of the mother's last menstrual period (LMP).
Queensland Perinatal Data Collection (QPDC)
First day of the last menstrual period
Representational Attributes
Numeric Character
Date
DDMMYYYY
8
8
Permissible Values

Permissible_values

-
Supplementary Values

Supplemenary_values

-
Collection and Usage Attributes
Queensland Perinatal Data Collection (QPDC):
May be null.
Must be a valid date.
Must not be in the future (i.e. past current date).
Must not be before date of birth of the mother.
For hospital births, must not be after the separation date.
Queensland Perinatal Data Collection (QPDC):
In the case of hospitals reporting this information electronically, if only month and year are known, the day is entered as 01, 15 or 28 for early, mid or late in the month. The Last menstrual period estimated indictor must be completed as an E for estimated. If the date is unknown, leave the field blank.
Date of LMP is unknown may occur in cases where there is a history of abnormal or irregular periods, or a delay of ovulation has occurred following the use of the contraceptive pill.
The first day of the LMP is required to estimate gestational age, which is a key outcome of pregnancy and an important risk factor for neonatal outcomes. Although the date of the LMP may not be known, or may sometimes be erroneous, estimation of gestational age based on clinical assessment may also be inaccurate. Both methods of assessing gestational age are required for analysis and outcomes.
Relational Attributes
Related Metadata References

Related Metadata References_IR

  • 1 - 6
ViewRelationshipMetadata Item TypeMetadata Item SubtypeNameIdentifier & VersionApproval Status
Is used in conjunction withData ElementData ElementFemale (pregnant)-estimated date of confinement (QPDC DSR)QH 042524 Version 1Current
Is used in conjunction withData ElementData ElementLast menstrual period estimated indicatorQH 042527 Version 1Current
Is used in conjunction withData ElementData ElementPregnancy-last menstrual period estimated indicatorQH 042527 Version 2Draft
Is used in the calculation ofData ElementData ElementFemale (pregnant)-estimated date of confinementQH 040034 Version 1Current
Relates toData ElementData ElementPregnancy-first day of the last menstrual period (QPDC DSR)QH 042523 Version 1Current
Relates toData ElementData Element ConceptPregnancyQH 041690 Version 1Current
Implementation in Metadata Sets

Implemented

  • 1 - 2
ViewMetadata Item TypeMetadata Item SubtypeNameIdentifer & VersionObligationApproval StatusEffective FromEffective To
Information AssetData CollectionQueensland Perinatal Data Collection (QPDC)QH 020003 Version 2OptionalCurrent01-Jul-2019
Information AssetData CollectionQueensland Perinatal Data Collection (QPDC)QH 020003 Version 1OptionalSuperseded01-Jul-200030-Jun-2019
Source and Reference Attributes
Australian Institute of Health and Welfare
METeOR data element: Pregnancy-first day of the last menstrual period, date DDMMYYYY, Indicator 270038, Health standard 01/03/2005
https://meteor.aihw.gov.au/content/index.phtml/itemId/270038/meteorItemView/long
LMP; Last menstrual period; Menstrual period;