Effect of baseline covariates and associations with mortality assessed by Cox regressions (N = 6,704).

a

Age and gender adjusted.

b

Adjusted for age at assessment, gender, ethnicity group, marital status, and index of deprivation score; HR = 1.23 (95% CI: 1.18, 1.28) for each quintile increment.

* P-value<0.01,

p-value<0.05.

+

P-value of test for linear trend <0.001.

Effect of baseline covariates and associations with mortality assessed by Cox regressions (N = 6,704).