Review of potentials and limitations of indirect approaches for estimating reference limits/intervals of quantitative procedures in laboratory medicine

R Haeckel, W Wosniok, T Streichert… - Journal of Laboratory …, 2021 - degruyter.com
Reference intervals (RIs) can be determined by direct and indirect procedures. Both
approaches identify a reference population from which the RIs are defined. The crucial …

refineR: a novel algorithm for reference interval estimation from real-world data

T Ammer, A Schützenmeister, HU Prokosch, M Rauh… - Scientific reports, 2021 - nature.com
Reference intervals are essential for the interpretation of laboratory test results in medicine.
We propose a novel indirect approach to estimate reference intervals from real-world data …

[HTML][HTML] A novel tool for the rapid and transparent verification of reference intervals in clinical laboratories

G Hoffmann, S Klawitter, I Trulson, J Adler… - Journal of Clinical …, 2024 - mdpi.com
Background/Objectives: We present a software package called reflimR (Version 1.0. 6),
which enables rapid and transparent verification of reference intervals from routine …

How Gaussian mixture modelling can help to verify reference intervals from laboratory data with a high proportion of pathological values

G Hoffmann, N Allmeier, M Kuti… - Journal of Laboratory …, 2024 - degruyter.com
Objectives Although there are several indirect methods that can be used to verify reference
limits, they have a common weakness in that they assume a low proportion of pathological …

Sensitivity of High Conservation Value Birds to Para-Aminopropiophenone (PAPP) Determined by Sub-Lethal Dose–Response Assay

CA Marks, K Trought, S Brown, J Arrow, B Hopkins - Animals, 2023 - mdpi.com
Simple Summary Para-aminopropiophenone (PAPP) is a bait poison used for the control of
several introduced predators in Australia and New Zealand. In highly susceptible species …

Verification of sex-and age-specific reference intervals for 13 serum steroids determined by mass spectrometry: evaluation of an indirect statistical approach

SC Anker, J Morgenstern, J Adler, M Brune… - Clinical Chemistry and …, 2023 - degruyter.com
Objectives Conventionally, reference intervals are established by direct methods, which
require a well-characterized, obviously healthy study population. This elaborate approach is …

Comparison of three indirect methods for verification and validation of reference intervals at eight medical laboratories: a European multicenter study

A Meyer, R Müller, M Hoffmann, Ø Skadberg… - Journal of Laboratory …, 2023 - degruyter.com
Objectives Indirect methods for the indirect estimation of reference intervals are increasingly
being used, especially for validation of reference intervals, as they can be applied to routine …

Measurement uncertainty

N Milinković, S Jovičić - Advances in Clinical Chemistry, 2023 - Elsevier
Over time, the metrological concept of uncertainty in measurement has been very
successfully integrated into laboratory sciences. For proper implementation, an …

Importance and Uncertainty of λ-Estimation for Box–Cox Transformations to Compute and Verify Reference Intervals in Laboratory Medicine

F Klawonn, N Riekeberg, G Hoffmann - Stats, 2024 - mdpi.com
Reference intervals play an important role in medicine, for instance, for the interpretation of
blood test results. They are defined as the central 95% values of a healthy population and …

An Objective Function-Based Clustering Algorithm with a Closed-Form Solution and Application to Reference Interval Estimation in Laboratory Medicine

F Klawonn, G Hoffmann - Algorithms, 2024 - mdpi.com
Clustering algorithms are usually iterative procedures. In particular, when the clustering
algorithm aims to optimise an objective function like in k-means clustering or Gaussian …