Accuracy refers to how close a measured value is to the true or actual value. In clinical research, accurate measurements reflect the researcher’s ability to minimize systematic errors and biases, ensuring that the results closely align with the reality being studied. Precision, however, measures the degree of consistency and repeatability of measurements. In clinical research, precise measurements indicate that the results are tightly clustered around a central value.

Reference: https://www.accuracyresearch.com/blog/accuracy-vs-precision-vs-reliability/