"impair the accuracy" is correct and can be used in written English.
You can use it when you want to express that something has decreased the accuracy or precision of a measure or calculation. For example: "The introduction of a variable in the equation impaired the accuracy of the results."
The poorest agreement was found for Cu and Sn, the elements affected by contamination from the cutter that will obviously impair the accuracy of the LA results to the greatest extent.
Therefore, scale issues significantly impair the accuracy of clustering based on multiple data types.
Poorly understood questions, or underutilized rating scale categories can seriously impair the accuracy and reliability of PRO measurements [ 6- 8].
In cases of arrhythmia, the beat-to-beat variation of arterial pressure (AP) may impair the accuracy of automated cuff measurements.
In dual isotope SPECT, downscatter of 99mTc-derived photons into the lower energy Tl window may impair the accuracy of integrated analysis of perfusion and cell survival.
These tumor samples are often characterized by poor cellularity and/or inflammatory or necrotic background containing large amounts of tumor-associated normal cells, which may potentially impair the accuracy of tumor subtyping and molecular characterization [ 4].
In attempts to precipitate a single substance from a solution containing several components, undesired constituents often are incorporated in the crystals, reducing their purity and impairing the accuracy of the analysis.
Also, samples from the powermeter are collected in a separate system, to prevent the measurements from impairing the accuracy of the tests.
Then, the principal components with the smallest eigenvalues can be omitted without impairing the accuracy of estimation.
Fourth, we did not return the transcripts to participants to review, which may have impaired the accuracy of the inferences made from participant statements.
