The 2017 version of the Broselow Tape incorporates revised length weight zones based on the most recent National Health and Nutrition Examination Survey (NHANES) data set. *If the healthcare provider incorporates a visual estimate of body habitus into the prediction, the accuracy of the estimate of actual patient weight is improved as confirmed in multiple studies.
Confidence intervals provide more information than point estimates. Confidence intervals for means are intervals constructed using a procedure (presented in the next section) that will contain the population mean a specified proportion of the time, typically either 95% or 99% of the time.
This is called a point estimate of h. If the sample is large, H will be a good estimate of h, but by itself it does not tell you how good it is. A 95% confidence interval is a different kind of estimate. It consists of two numbers L (lower) and U (upper), which are derived from the sample in some way without knowledge of the unknown h (or any other unknown parameters) . The interval (L, U) is supposed to contain the unknown h.