The phrase "ascertain strength" is correct and usable in written English.
It can be used when discussing the process of determining or evaluating the strength of something, such as a material, argument, or position.
Example: "Before proceeding with the construction, we need to ascertain strength of the materials we will be using."
Alternatives: "determine strength" or "evaluate strength".
A CFA is used to categorize the activity indices, and a PCA is used to derive two macro-indices of activity to ascertain the strength of solar and geomagnetic activity.
The authors conducted a critical review of the literature to ascertain the strength of the scientific and professional evidence supporting an association between dental caries and the experience and severity of asthma.
To ascertain the strength of mutual independence, for each triplet the co-expression between two members that can be attributed to the correlation to the 3rd member is determined.
We conducted a meta-analysis to ascertain the strength and consistency of the association between study results and formal publication.
The effect sizes (ES) of the categorized PTH and BMD measures were calculated to ascertain the strength of association between the categorized independent and the dependent variables.
However, the variance in estimates and their influence in policy and public opinion underlines the importance for critical appraisal tools and guidelines to be established to ascertain the strength of inferences provided through each methodology.
Even though a number of different standards can be used to ascertain the strength of the agreement between examiners, we have relied on a widely used guideline proposed by Landis and Koch for interpreting kappa scores [ 18].
We will use the GRADE system to ascertain the strength of the evidence base for each outcome and report data for the primary outcome in a 'Summary of Findings' table.
Most studies of frailty and CKD have been among patients with ESRD, in community cohorts not specifically enriched for CKD [ 2, 5], or in CKD cohorts that employ estimates of kidney function limiting the ability to ascertain the strength of association between directly measured kidney function and frailty, independent of comorbidity and other factors.
