How do you find the z-score for BMI?
A z-score of 0 is simply the median at that sex/age, and in this case, the BMI is 20.76 kg/m2. (When z=0, L × S × z is 0, and the BMI is equal to M in equation #2). = 33.44 kg/m2. One half of the distance between a z-score of 0 and +2 is (33.44 – 20.76) / 2 = 6.34 kg/m2.
How do you calculate z-score for malnutrition?
The percentage of children stunted, wasted, and underweight are equal to the specific numerators divided by the appropriate denominators and multiplied by 100. The mean z-scores are equal to the numerator divided by the appropriate denominator.
What does BMI z-score mean?
Body mass index z-scores, also called BMI standard deviation (s.d.) scores, are measures of relative weight adjusted for child age and sex. The effect of this is that more than 5% of the population could be, for example, above the 95th percentile of BMI-for-age.
Is 16.8 a good BMI?
A BMI of 20-25 is ideal; 25-30 is overweight and over 30 is obese. If your BMI is under 18.5, you’re considered underweight. If your BMI is 18.5-20, you’re a bit underweight and can’t afford to lose more.
What is az score for weight?
A weight-for-length/height z-score (WHZ) compares a child’s weight to the weight of a child of the same length/height and sex to classify nutritional status. To use the charts to classify children’s nutritional status: 1.
What is a normal BMI z-score?
For example, body mass index (BMI)-for-age Z-score cut-points of < − 2.0, > 1.0, > 2.0 and > 3.0 are recommended by the WHO to classify children 0–5 years of age as wasted, risk-of-overweight, overweight, and obese, respectively [5].
How do you interpret the z-score?
The value of the z-score tells you how many standard deviations you are away from the mean. If a z-score is equal to 0, it is on the mean. A positive z-score indicates the raw score is higher than the mean average. For example, if a z-score is equal to +1, it is 1 standard deviation above the mean.
Is a BMI of 16 too low?
BMI is not a perfect system for measuring body fat, however in most cases BMI is reliable and gives a fair indication of body fat levels….BMI Ranges.
| BMI | BMI Range |
|---|---|
| Less than 15 | Very severely underweight |
| Between 15 and 16 | Severely underweight |
| Between 16 and 18.5 | Underweight |
| Between 18.5 and 25 | Healthy weight |
Is a BMI of 16 OK?
A body mass index of anything under 18.5 is considered underweight and can have potential health consequences, just like a BMI that’s considered obesity. Speak with your doctor if you have a BMI of 16 because this is dangerously low.