Body weight in Finland: Difference between revisions
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List of parents: | List of parents: | ||
* | *[[Body weight of 0-24 months old Finnish children]] | ||
*[[Body weight of 2-18 year old Finnish children]] | |||
=== Data1 === | === Data1 === | ||
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<span>Note: There was not measurements for ages 18-29yr, only for 30-55yr. </span> | <span>Note: There was not measurements for ages 18-29yr, only for 30-55yr. </span> | ||
=== Data 3 === | |||
The most comprehensive information on body weights of Finnish children are gender specific growth curves. They were previously used to extract the mean and 95% confidence interval (CI) of body weight at each age (month or year) from 0 to 18 years. See results of variables: [[Body weight of 0-24 months old Finnish children]] and [[Body weight of 2-18 year old Finnish children]]. Based on this information probability distributions of body weights of children aged 0-2 years and 2-18 years were constructed. Body weights of males and females are studied separately. It was assumed that the body weight for each 1-month or 1-year age specific interval follows a normal distribution with mean being the mean reported in growth tables and standard deviation (SD) being the larger value of SDs calculated from the bounds of the 95% CI. 2500 values of body weights for each 1-month and 1-year age interval were simulated from respective normal distributions and then grouped to match groups 0-2 years (months from 0 to 24) and 2-18 years (years from 2 to 18). Since none of parametric distributions fits | |||
the resulting data sets the empirical distribution of body weights was constructed. | |||
=== Unit === | === Unit === | ||
| Line 75: | Line 82: | ||
|} | |} | ||
<br> '''Data 3'''<br> | |||
Results of one simulation. For each age/gender group mean value, standard deviation (sd) and five percentiles (5th, 25th, 50th , 75th and 95th) are provided. | |||
{| {{prettytable}} | |||
| | |||
| 0-2 years males | |||
| 0-2 years females | |||
| 2-18 years males | |||
| 2-18 years females | |||
|---- | |||
| mean | |||
| 9.4105 | |||
| 9.1249 | |||
| 31.4799 | |||
| 31.186 | |||
|---- | |||
| sd | |||
| 2.7969 | |||
| 2.8061 | |||
| 16.0825 | |||
| 15.3681 | |||
|---- | |||
| p5 | |||
| 3.961 | |||
| 3.8875 | |||
| 12.5255 | |||
| 12.1115 | |||
|---- | |||
| p25 | |||
| 7.6278 | |||
| 7.2345 | |||
| 18.2514 | |||
| 18.1586 | |||
|---- | |||
| p50 | |||
| 9.9635 | |||
| 9.5678 | |||
| 27.642 | |||
| 27.286 | |||
|---- | |||
| p75 | |||
| 11.4834 | |||
| 11.2236 | |||
| 41.0361 | |||
| 43.5152 | |||
|---- | |||
| p95 | |||
| 13.2375 | |||
| 13.1518 | |||
| 63.522 | |||
| 59.1031 | |||
|---- | |||
|} | |||
== References == | == References == | ||
Revision as of 10:56, 27 May 2009
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Scope
Body weight in Finland describes body weight for the general population and subgroups in Finland.
Definition
Causality
List of parents:
Data1
Estimate is a point estimate from [1].
Data 2
Probability distribution of body weight of adults aged 18-55yr and over 55yr were extracted from [2]. For a given age group body weight data was summarized in terms of mean and the 95% confidence interval:
- 18-55yr: 77.6 (77.0-78.1),
- 55yr+: 76.5 (75.9-77.2).
Based on that a normal distribution was created. Since standard deviations (SDs) calculated from 2.5th and 97.5th percentiles were not exactly equal the larger SD was used as a standard deviation of a normal distribution.
Note: There was not measurements for ages 18-29yr, only for 30-55yr.
Data 3
The most comprehensive information on body weights of Finnish children are gender specific growth curves. They were previously used to extract the mean and 95% confidence interval (CI) of body weight at each age (month or year) from 0 to 18 years. See results of variables: Body weight of 0-24 months old Finnish children and Body weight of 2-18 year old Finnish children. Based on this information probability distributions of body weights of children aged 0-2 years and 2-18 years were constructed. Body weights of males and females are studied separately. It was assumed that the body weight for each 1-month or 1-year age specific interval follows a normal distribution with mean being the mean reported in growth tables and standard deviation (SD) being the larger value of SDs calculated from the bounds of the 95% CI. 2500 values of body weights for each 1-month and 1-year age interval were simulated from respective normal distributions and then grouped to match groups 0-2 years (months from 0 to 24) and 2-18 years (years from 2 to 18). Since none of parametric distributions fits the resulting data sets the empirical distribution of body weights was constructed.
Unit
kg
Formula
Analytica_id:
<anacode> Table(Preg_gen)(55,70) </anacode>
Result
Data 1
| General population | Pregnant mothers |
|---|---|
| 70 | 55 |
Data 2
| Adults 18-55yr | Adults 55yr+ | |
| mean of normal distribution | 77.6 | 76.5 |
| SD of normal distribution | 0.31 | 0.36 |
Data 3
Results of one simulation. For each age/gender group mean value, standard deviation (sd) and five percentiles (5th, 25th, 50th , 75th and 95th) are provided.
| 0-2 years males | 0-2 years females | 2-18 years males | 2-18 years females | |
| mean | 9.4105 | 9.1249 | 31.4799 | 31.186 |
| sd | 2.7969 | 2.8061 | 16.0825 | 15.3681 |
| p5 | 3.961 | 3.8875 | 12.5255 | 12.1115 |
| p25 | 7.6278 | 7.2345 | 18.2514 | 18.1586 |
| p50 | 9.9635 | 9.5678 | 27.642 | 27.286 |
| p75 | 11.4834 | 11.2236 | 41.0361 | 43.5152 |
| p95 | 13.2375 | 13.1518 | 63.522 | 59.1031 |