who06 | R Documentation |

The WHO growth standard (WHO 2006) for height, weight, body mass index, circumferences and skinfold thicknesses, fitted by the LMS method and summarised by values of L, M and S by sex from birth to 5 years.

```
who06
```

A tibble with 150 observations on the following 23 variables:

- years
age from 0 to 5 years

- L.ht
numeric vector

- M.ht
numeric vector

- S.ht
numeric vector

- L.wt
numeric vector

- M.wt
numeric vector

- S.wt
numeric vector

- L.bmi
numeric vector

- M.bmi
numeric vector

- S.bmi
numeric vector

- L.head
numeric vector

- M.head
numeric vector

- S.head
numeric vector

- L.arm
numeric vector

- M.arm
numeric vector

- S.arm
numeric vector

- L.subscap
numeric vector

- M.subscap
numeric vector

- S.subscap
numeric vector

- L.tricep
numeric vector

- M.tricep
numeric vector

- S.tricep
numeric vector

- sex
two-level factor with level 1 male and level 2 female

The L, M and S values for each measurement correspond respectively to the
Box-Cox power, median and coefficient of variation of the distribution by
age and sex (Cole & Green 1992). The short names and units for each measurement (see
`LMS2z`

) are as follows: height (ht, cm), weight (wt, kg), body mass
index (bmi, kg/m2), head circumference (head, cm), arm circumference (arm, cm), subscapular
skinfold (subscap, mm), and tricep skinfold (tricep, mm).

https://www.who.int/toolkits/child-growth-standards

World Health Organization. WHO Child Growth Standards: Methods and development: Length/height-for-age, weight-for-age, weight-for-length, weight-for-height and body mass index-for-age. Geneva: WHO; 2006.

Cole TJ, Green PJ. Smoothing reference centile curves: the LMS method and penalized likelihood. Stat Med 1992;11:1305-19.

```
data(who06)
## calculate z-score for length 60 cm in boys at age 0:12 months
LMS2z(x = 0:12/12, y = 60, sex = 1, measure = 'ht', ref = 'who06')
```

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