The phrase "assessed using a combination" is correct and usable in written English.
It can be used when describing a method or approach that involves multiple elements or techniques for evaluation or analysis.
Example: "The students' performance was assessed using a combination of tests, projects, and class participation."
Alternatives: "evaluated through a mix" or "measured by a blend".
Subjective Global Assessment was assessed using a combination of subjective assessment of weight and appetite changes, gastrointestinal symptoms, functional ability, and metabolic stress as well as physical examination of the evidence of muscle and fat loss.
Literature showing that rates of change of degraded area can be assessed using a combination of medium and high resolution images [e.g. [6]] relates only to disturbance due to selective logging and/or fire in rainforest.
In one study, specimens consisting of 35 whole chickens, 27 chicken livers, and 38 chicken faeces were assessed using a combination of three culture methods, and just over half (57%) were found to be positive for Campylobacter contamination (Ghazwan [2006]).
Pain will be assessed, using a combination of methods concurrently.
Adherence was assessed using a combination of self-report and pill count methods.
Drug synergy was assessed using a combination index (CI) method as described before [ 9, 18].
Migration inhibitory factor (MIF) levels in the serum samples were assessed using a modified mouse/human combination ELISA technique as described previously [ 21].
The significance of differences in cell survival between different treatments was assessed using a Kruskal-Wallis test in combination with a Dunn's multiple comparison test.
The effects of antibiotics in combination were assessed using a microbroth checkerboard technique [ 21].
Changes in renal and systemic hemodynamic function in response to the DRI and DRI plus ACEi combination were assessed using a repeated-measures ANOVA.
Differences in ROI data between amygdala subdivisions were assessed using a Students t-test for all combinations of the 3 areas of interest, both for the right and left amygdala.
