CRP and depressive symptom measurement: In the autoregressive model, baseline CRP was positively associated with CRP in 2015 (ßstd = 0.26, p < 0.01), baseline depression prospectively predict depression in 2013 (ßstd = 0.47, p < 0.01), and depression in 2013 prospectively predicted depression in 2015 (ßstd = 0.49, p < 0.01).