The phrase "analyses were first performed" is correct and usable in written English.
It can be used when discussing the initial execution of analyses in a research or scientific context.
Example: "In the study, analyses were first performed to determine the correlation between the variables."
Alternatives: "analyses were initially conducted" or "analyses were first carried out."
Correlation analyses were first performed between the PM2.5 concentration and all metrics by month, season, and the entire period to explore the importance of different structural measures at each scale (i.e., different radius).
Because these genes were classified into three anatomical/developmental groups and showed different expression patterns in different genetic backgrounds (Figures 1 and 2), co-expression analyses were first performed within each of the anatomical/developmental groups and further performed among the genes of all the MAP kinase families.
Mean-Centering PLS (MC-PLS) analyses were first performed with no a priori hypothesis regarding the potential pattern of effects.
Center-specific analyses were first performed and random-effect meta-analyses were used to evaluate heterogeneity (I2) and obtain pooled estimates of associations.
Descriptive analyses were first performed.
Descriptive analyses were first performed on the total sample.
In order to verify the mechanical experimental setup of the assembling between the host structure and the piezo-film patches in term of constraint, transient and modal analyses are first performed in order to compare the experimental responses to those obtained by from the numerical analyses performed with the commercial code COMSOL Multiphysics®.
Analyses are first performed on completers and then sensitivity analyses are conducted using imputed data.
Statistical analyses of the microarray data were first performed using TMEV 4.0 [ 22].
Univariate analyses, as shown in Table 1, were first performed for all 65 patients.
Finite element analyses and ambient vibration tests are first performed to extract the natural frequencies and mode shapes of the structure.
