Product of conception—gestational age, total completed weeks N[N]
Identifying and definitional attributes | |
Metadata item type: | Data Element |
|---|---|
| Short name: | Gestational age |
| METEOR identifier: | 695332 |
| Registration status: |
|
| Definition: | The gestational age of a product of conception in completed weeks. |
| Data Element Concept: | Product of conception—gestational age |
Value domain attributes | |||||||||||||||
Representational attributes | |||||||||||||||
| Representation class: | Total | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Data type: | Number | ||||||||||||||
| Format: | N[N] | ||||||||||||||
| Maximum character length: | 2 | ||||||||||||||
| Supplementary values: |
| ||||||||||||||
| Unit of measure: | Completed weeks | ||||||||||||||
Data element attributes | |||||||||||||||
Collection and usage attributes | |||||||||||||||
| Guide for use: | Gestational age is the best clinical estimate of the duration of pregnancy at a specific point in time, based on the first day of the last menstrual period (LMP), ultrasound or physical examination of the baby. Gestational age is conventionally expressed in completed weeks. When gestational age is calculated using the first day of the LMP, the first day is counted as day zero and not day one. Therefore, a 25 week, 5 day fetus is considered a 25 week fetus (25+0, 25+1, 25+2, 25+3, 25+4, 25+5, 25+6). When ultrasound is used to date a pregnancy, the earliest ultrasound examination should be used and should preferably be between 6 and 10 weeks gestation. Scans performed beyond 24 weeks gestation are unlikely to be reliable in estimating gestational age and should not be used for this purpose. The World Health Organization identifies the following categories for duration of gestation:
| ||||||||||||||
| Comments: | Gestational age is a key marker in pregnancy and an important risk factor for neonatal outcomes. | ||||||||||||||
Source and reference attributes | |||||||||||||||
| Submitting organisation: | National Perinatal Data Development Committee | ||||||||||||||
| Origin: | WHO (World Health Organization) 1992. International Classification of Diseases and Related Health Problems, 10th Revision. Geneva: WHO. | ||||||||||||||
| Reference documents: | American Academy of Pediatrics 2004. Policy statement: Age terminology during the perinatal period. Paediatrics 114(5):1362–64. | ||||||||||||||
Relational attributes | |||||||||||||||
| Related metadata references: | See also Pregnancy—estimated duration of pregnancy at the first antenatal care visit, total completed weeks N[N]
See also Pregnancy—estimated duration of pregnancy at the first antenatal care visit, total completed weeks N[N]
Supersedes Product of conception—gestational age, completed weeks N[N]
| ||||||||||||||
| Implementation in Data Set Specifications: All attributes + |
| ||||||||||||||
| Implementation in Indicators: |
| ||||||||||||||