Metadata item type: | Data Element Concept |
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| Synonymous names: | Pregnancy—estimated gestation |
| METEOR identifier: | 379595 |
| Registration status: |
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| Definition: | The estimated duration of a pregnancy on a specified day. |
Pregnancy—estimated duration
Object Class attributes
Identifying and definitional attributes
| Object class: | Pregnancy |
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| Definition: | The period during which a woman carries a developing fetus, normally in the uterus. Pregnancy lasts for approximately 266 days, from conception until the baby is born, or 280 days from the first day of the last menstrual period. During pregnancy menstruation is absent, there may be a great increase in appetite, and the breasts increase in size; the woman may also experience morning sickness. These and other changes brought about by a hormone (progesterone) produced at first by the ovary and later by the placenta. Definite evidence of pregnancy is provided by various pregnancy tests, by the detection of the heartbeat of the fetus, and by ultrasound. |
| Specialisation of: | Life event |
Source and reference attributes | |
| Submitting organisation: | Australia Institute of Health and Welfare |
| Origin: | University of Oxford 2002. Concise Colour Medical Dictionary 3rd ed. UK: Oxford University Press |
Property attributes
Identifying and definitional attributes
| Property: | Estimated duration |
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| Definition: | The period of time during which something continues. |
| Property group: | Performance indicators |
Source and reference attributes
| Submitting organisation: | Australian Institute of Health and Welfare |
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Data element concept attributes
Collection and usage attributes
| Guide for use: | The duration of a pregnancy on the day of the first antenatal visit has the same value as the best estimate of gestational age for the fetus or baby. If gestational age has been revised, a similar revision will need to be applied to earlier recorded estimates of pregnancy duration. Alternatively the pregnancy duration on a specified day can be calculated from the gestational age on the day of the baby at birth. |
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Relational attributes
| Related metadata references: | See also Female (pregnant)—estimated gestational age, total weeks NN
Has been superseded by Pregnancy—estimated duration of pregnancy at the first antenatal care visit
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| Data Elements implementing this Data Element Concept: | Pregnancy—estimated duration (at the first visit for antenatal care), completed weeks N[N]
Pregnancy—estimated duration (at the first visit for antenatal care), completed weeks N[N]
Pregnancy—estimated duration, total weeks N[N]
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