Correlations between EID and health utilities for the 3 assessed health states were generally weak for all subjects (range: VAS: -0.23 to 0.07; TTO: -0.14 to 0.11, Table 3) and among individual ethnic groups, with the exception of Malay subjects in whom EID showed a moderate correlation with the moderately impaired health state measured using VAS (but not TTO).
With moderate correlation with other covariates (r = 0.25) and moderately uneven subject allocation on the variable, this reduces to 91% and 75%.
The musculoskeletal functional limitations index had moderately strong correlations with three other measures of functional status: WOMAC function scale (r = 0.60), Intermediate Activities of Daily Living Scale (r = 0.60) and Basic Activities of Daily Living Scale (r = 0.48) and a moderate correlation with the 0 100 self rated health scale (r = 0.40).
The four factors were moderately correlated, with Pearson correlation coefficients ranging from 0.24 to 0.40 (Table 3).
The meat consumptions at baseline and first follow up were moderately correlated, with the correlation coefficient ranging from 0.37 to 0.40 for fresh red meat, chicken and fish.
In general, individuals' survey responses to perceived risk for the eight health threats were only moderately correlated, with pairwise correlations typically well under 0.5.
LpPLA2 mass and activity were moderately correlated with each other (r = 0.30), but only LpPLA2 activity exhibited moderate correlations with lipid fractions.
Maximal 8-hr mean O3 was weakly correlated with PM10, SO2, and NO2 (Pearson correlation coefficients ranged from 0.01 to 0.19) and moderately correlated with temperature level (Pearson correlation coefficient, 0.48).
Background PM10 was moderately correlated with NO2 (Pearson correlation coefficient, r = 0.60) and O3 (r = 0.44); NO2 was weakly correlated with O3 (r = 0.03).
Mean LINE-1 and AluYb8 methylation levels were also found to be weakly to moderately correlated, with a Pearson correlation of 0.29 [95% confidence interval (CI): 0.20, 0.38].
