: correlation coefficient. aMean ± SD, value <0.05 (unpaired -test). bMedian (interquartiles Q1–Q3), value = 0.001 (Mann-Whitney test). cMedian (range), value <0.01. dMedian (25th percentile, 75th percentile), value <0.001. eWhite, Afro-Caribbean, South Asian, Chinese, and others, mean (standard error in the mean level), value <0.01. fIL-6 levels in sera measured by bioassay, median (range), value <0.0005.