Table 2.

Incidence and risk of major depression in patients with chronic kidney disease at a 3-year follow-up: comparison between patients with vitamin D deficiency and those without.

Follow-up time	VDD group (n = 17,955) Event (%)	Control group (n = 17,955) Event (%)	HR (95%)	Log-rank test
1-year	191 (1.06%)	105 (0.59%)	1.929 (1.52, 2.448)	< 0.0001
2-year	247 (1.38%)	155 (0.86%)	1.715 (1.403, 2.097)	< 0.0001
3-year	288 (1.60%)	194 (1.08%)	1.603 (1.337, 1.924)	< 0.0001
3 month–1 year	103 (0.57%)	68 (0.38%)	1.646 (1.212,2.236)	0.0013
3 month–2 year	162 (0.90%)	120 (0.67%)	1.484 (1.172,1.879)	0.001
3 month–3 year	205 (1.15%)	174 (0.98%)	1.291 (1.055,1.58)	0.013

VDD, vitamin D deficiency; HR, hazard ratio.