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The Corpulence Index (CI) (also Ponderal Index (PI) or Rohrer's Index) is a measure of corpulence, or of leanness in other variants, of a person [1] calculated as a relationship between mass and height. [2] It was first proposed in 1921 as the "Corpulence measure" by Swiss physician Fritz Rohrer [3] [4] and hence is also known as Rohrer's Index ...
A reference range is usually defined as the set of values 95 percent of the normal population ... References range may vary with age, sex ... 95% PI) 5 [95] 90% PI
The standard definition of a reference range for a particular measurement is defined as the interval between which 95% of values of a reference population fall into, in such a way that 2.5% of the time a value will be less than the lower limit of this interval, and 2.5% of the time it will be larger than the upper limit of this interval, whatever the distribution of these values.
Prediction intervals are commonly used as definitions of reference ranges, such as reference ranges for blood tests to give an idea of whether a blood test is normal or not. For this purpose, the most commonly used prediction interval is the 95% prediction interval, and a reference range based on it can be called a standard reference range .
"Your blood pressure is supposed to be under 140 over 90, optimally closer to 120 over 80."
The ratio of the AC component to the DC component, expressed as a percentage, is known as the (peripheral) perfusion index (Pi) for a pulse, and typically has a range of 0.02% to 20%. [43] An earlier measurement called the pulse oximetry plethysmographic (POP) only measures the "AC" component, and is derived manually from monitor pixels. [41] [44]
The complete blood count is interpreted by comparing the output to reference ranges, which represent the results found in 95% of apparently healthy people. [35] Based on a statistical normal distribution, the tested samples' ranges vary with sex and age. [179]
Hone Health reports on the factors responsible for testosterone levels in men and how they are affected by age and lifestyle.