calc_ibw {clinPK} R Documentation

## Calculate ideal body weight for children and adults

### Description

Get an estimate of ideal body weight. This function allows several commonly used equations

### Usage

```calc_ibw(weight = NULL, height = NULL, age = NULL, sex = "male",
method_children = "standard", method_adults = "devine", digits = NULL)
```

### Arguments

 `weight` weight in kg, can be vector `height` height in cm, can be vector `age` age in years, can be vector `sex` either 'male' or 'female', can be vector `method_children` method to use for children >1 and <18 years. Choose from 'standard', 'mclaren' (McLaren DS, Read WWC. Lancet. 1972;2:146-148.), 'moore' (Moore DJ et al. Nutr Res. 1985;5:797-799), 'bmi' (), 'ada' (American Dietary Association) `method_adults` method to use for >=18 years. Choose from 'devine' (default, Devine BJ. Drug Intell Clin Pharm. 1974;8:650-655). `digits` number of decimals (can be NULL to for no rounding)

### Details

Equations:

<1yo Use actual body weight

1-17 years old ('standard'): if height < 5ft: IBW= (height in cm2 x 1.65)/1000 if height > 5ft: IBW (male) = 39 + (2.27 x height in inches over 5 feet) IBW (female) = 42.2 + (2.27 x height in inches over 5 feet)

Methods not implemented yet: McLaren: IBW = - step1: x = 50th percentile height for given age - step2: IBW = 50th percentile weight for x on weight-for-height scale Moore: IBW = weight at percentile x for given age, where x is percentile of height for given age BMI: IBW = 50th percentile of BMI for given age x (height in m)^2 ADA: IBW = 50th percentile of WT for given age

>= 18 years old (Devine equation) IBW (male) = 50 + (2.3 x height in inches over 5 feet) IBW (female) = 45.5 + (2.3 x height in inches over 5 feet)

### Examples

```calc_ibw(weight = 70, height = 170, age = 40, sex = "female")
calc_ibw(weight = 30, height = 140, age = 10, sex = "female")
```

[Package clinPK version 0.9.0 Index]