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Centile charts for birthweight for gestational age for Scottish singleton births.

Bonellie S, Chalmers J, Gray R, Greer I, Jarvis S, Williams C - BMC Pregnancy Childbirth (2008)

Bottom Line: Centile charts for birthweight for sex and parity groupings were constructed for singleton birth and compared to existing charts used in Scottish hospitals.Mean birthweight has been shown to have increased over recent decades.The differences shown between the new and currently used centiles confirm the need for more up-to-date centiles for birthweight for gestational age.

View Article: PubMed Central - HTML - PubMed

Affiliation: School of Accountancy, Economics and Statistics, Napier University, 10 Colinton Road, Edinburgh, EH10 5DT, UK. s.bonellie@napier.ac.uk

ABSTRACT

Background: Centile charts of birthweight for gestational age are used to identify low birthweight babies. The charts currently used in Scotland are based on data from the 1970s and require updating given changes in birthweight and in the measurement of gestational age since then.

Methods: Routinely collected data of 100,133 singleton births occurring in Scotland from 1998-2003 were used to construct new centile charts using the LMS method.

Results: Centile charts for birthweight for sex and parity groupings were constructed for singleton birth and compared to existing charts used in Scottish hospitals.

Conclusion: Mean birthweight has been shown to have increased over recent decades. The differences shown between the new and currently used centiles confirm the need for more up-to-date centiles for birthweight for gestational age.

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New centiles vs observed centiles for girls, parity 1 or more. 3rd, 50th and 97th centiles. Solid line: new centiles. Dashed line: observed centiles.
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Figure 4: New centiles vs observed centiles for girls, parity 1 or more. 3rd, 50th and 97th centiles. Solid line: new centiles. Dashed line: observed centiles.

Mentions: In order to assess the goodness of fit of the models, the new centiles were plotted against the observed centiles for each group. Figure 4 shows this plot for the 3rd, 50th and 97th centiles for girls, parity 1 or more. Figure 5 shows the 3rd, 10th, 25th, 50th, 75th, 90th and 97th centiles superimposed on the actual birthweights for the same groups. For comparison Figure 6 shows the new centiles compared to the currently used ISD centiles again for the 3rd, 50th and 97th centiles


Centile charts for birthweight for gestational age for Scottish singleton births.

Bonellie S, Chalmers J, Gray R, Greer I, Jarvis S, Williams C - BMC Pregnancy Childbirth (2008)

New centiles vs observed centiles for girls, parity 1 or more. 3rd, 50th and 97th centiles. Solid line: new centiles. Dashed line: observed centiles.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC2268653&req=5

Figure 4: New centiles vs observed centiles for girls, parity 1 or more. 3rd, 50th and 97th centiles. Solid line: new centiles. Dashed line: observed centiles.
Mentions: In order to assess the goodness of fit of the models, the new centiles were plotted against the observed centiles for each group. Figure 4 shows this plot for the 3rd, 50th and 97th centiles for girls, parity 1 or more. Figure 5 shows the 3rd, 10th, 25th, 50th, 75th, 90th and 97th centiles superimposed on the actual birthweights for the same groups. For comparison Figure 6 shows the new centiles compared to the currently used ISD centiles again for the 3rd, 50th and 97th centiles

Bottom Line: Centile charts for birthweight for sex and parity groupings were constructed for singleton birth and compared to existing charts used in Scottish hospitals.Mean birthweight has been shown to have increased over recent decades.The differences shown between the new and currently used centiles confirm the need for more up-to-date centiles for birthweight for gestational age.

View Article: PubMed Central - HTML - PubMed

Affiliation: School of Accountancy, Economics and Statistics, Napier University, 10 Colinton Road, Edinburgh, EH10 5DT, UK. s.bonellie@napier.ac.uk

ABSTRACT

Background: Centile charts of birthweight for gestational age are used to identify low birthweight babies. The charts currently used in Scotland are based on data from the 1970s and require updating given changes in birthweight and in the measurement of gestational age since then.

Methods: Routinely collected data of 100,133 singleton births occurring in Scotland from 1998-2003 were used to construct new centile charts using the LMS method.

Results: Centile charts for birthweight for sex and parity groupings were constructed for singleton birth and compared to existing charts used in Scottish hospitals.

Conclusion: Mean birthweight has been shown to have increased over recent decades. The differences shown between the new and currently used centiles confirm the need for more up-to-date centiles for birthweight for gestational age.

Show MeSH