The phrase "area was tested using" is correct and usable in written English.
It can be used in contexts where you are describing a method or approach taken to evaluate or analyze a specific area, such as in scientific research or assessments.
Example: "The area was tested using a series of controlled experiments to determine the effects of the new fertilizer."
Alternatives: "the area was evaluated with" or "the area was assessed through".
Water samples from 5,967 contiguous tube wells in a defined geographic area were tested using laboratory-based methods.
The difference in the change in the number of assaults across the intervention period between the two areas was tested using an interaction term between the before and after variable and the area variable.
Differences between grades and tumor areas were tested using t-test.
The efficiency of the new ensemble WoE and SVM method was tested using area under curve (AUC) which measured the prediction and success rates.
Difference of the area under the ROC curve (AUC) was tested using the z test.
The predictive accuracy of these six cutoffs was tested using the area under the curve (AUC) for receiver operating characteristic (ROC) analysis.
The sensitivity of the model, that is, how often it correctly predicted the outcome (y) given the value of a value of a covariate (x) was tested using the area under the ROC curve.
The sensitivity of the model, that is, how often it correctly predicted the outcome (y) given the value of a covariate (x) was tested using the area under the ROC curve.
Discrimination was tested using the area under a receiver operating characteristic (ROC) curve (AUROC) to assess the ability of HDL cholesterol and APO A-I to predict persistent OF.
The ability of uAnCR to predict the following endpoints was tested using the area under the ROC curve (AUC): the need for renal replacement therapy (RRT) or death, increased length of stay (defined as hospital discharge > 7 days or death ≤ 7 days from sample collection), and worsening AKI (defined as an increase in serum creatinine > 0.3 mg/dL after sample collection or RRT).
