The phrase "a moderate level of correlation" is correct and usable in written English.
It can be used when discussing the strength or degree of a relationship between two variables in statistical or analytical contexts.
Example: "The study found a moderate level of correlation between exercise frequency and overall health outcomes."
Alternatives: "a moderate degree of correlation" or "a medium level of correlation".
Still, a moderate level of correlation was observed between P-Shift and sequence-based methods, achieving the highest level (0.30) with the integrated CONDEL method.
Kaplan et al. [ 97] also found a moderate level of correlation between HRQoL and SRH; in their study, SRH predicted mortality better than HRQoL.
Spearman correlation coefficients suggest a moderate level of correlation between PFAAs: r values ranged between 0.47 and 0.65 (plots not shown).
The respondents reported a comparatively high level of correlation between POS, JS, and AC and a moderate level of correlation between POS and PA and between POS and JP.
There was a moderate level of correlation between measured and modeled PCE concentrations using the automated method among the 75 historical water samples (Spearman rank correlation coefficient (ρ = 0.65, p < 0.0001, see Figure 1 and Additional File 5).
Overall, there was a moderate level of correlation between PCE concentrations in the water samples and point concentration estimates derived from the adapted Webler and Brown model (Spearman rank correlation coefficient = 0.48, p < 0.0001, Table 2).
The authors compared long-term average nitrate measurements from 1947 through 1975 to recent measurements from 1980, and found a moderate level of overall correlation (Spearman correlation coefficient was 0.54, 95% CI 0.44, 0.63).
The average Spearman's rho of 0.67 showed a moderate level of positive correlation, a value in agreement with previous levels of correlation reported for nanoCAGE [ 9].
The KQoL scales had a similar moderate level of correlation with EQ-5D index scores.
Blood Mn concentrations measured in repeated samples collected during pregnancy showed only a moderate level of within-subject correlation (gestational age-adjusted ICC = 0.44), indicating that one blood measurement does not accurately represent Mn body burden during gestation.
In this analysis, we observed only a moderate level of within-person correlation for repeated measures of U-Cd concentrations (unadjusted ICC = 0.50; creatinine-adjusted ICC = 0.42) from 24-hr samples collected 3 9 months apart, suggesting that a single measurement does not accurately represent lifetime Cd body burden.
