Erratum to: Seasonal Variations in Vitamin D Levels and the Incident Dementia Among Older Adults Aged ≥60 Years in the UK Biobank

Abstract

Jiahao Liu, Eddy Roccati, Yutong Chen, Zhuoting Zhu, Wei Wang, Mingguang He and Xianwen Shang

[Journal of Alzheimer’s Disease Reports 8 (1), 2024, 411–422, DOI: 10.3233/ADR-230077].

In the original Table 2, page 417, the ranges for normal, insufficient, and deficient 25(OH)D were reversed due to a typographical error. We have corrected the ranges for each category of 25(OH)D in the updated Table 2.

Table 2

The risk for incident dementia associated with 25(OH)D by seasons

	25(OH)D
	Normal	Insufficient	Deficient	P-trend
Spring
Range (nmol/L)	≥35.3	17.9–35.2	10.0–17.8
Events	281	186	33
Person-years	319338	146930	24354
Incidence	0.9	1.3	14
HR (95% CI), Model 1	1.0	1.5 (1.2–1.8)	1.6 (1.1–2.3)	<0.0001
HR (95% CI), Model 2	1.0	1.5 (1.3–1.8)	1.6 (1.1–2.3)	<0.0001
Summer
Range (nmol/L)	≥50.5	28.1–50.4	10.0–28.0
Events	314	179	55
Person-years	302662	137969	22775
Incidence	1.0	1.3	2.4
HR (95% CI), Model 1	1.0	1.3 (1.1–1.6)	2.5 (1.9–3.3)	<0.0001
HR (95% CI), Model 2	1.0	1.3 (1.05–1.5)	1.9 (1.4–2.6)	<0.0001
Autumn
Range (nmol/L)	≥46.3	24.1–46.2	10.0–24.0
Events	263	140	52
Person-years	272827	125247	20621
Incidence	1.0	1.1	2.5
HR (95% CI), Model 1	1.0	1.2 (1.0–1.5)	2.7 (2.0–3.7)	<0.0001
HR (95% CI), Model 2	1.0	1.1 (0.9–1.4)	2.1 (1.5–2.9)	<0.0001
Winter
Range (nmol/L)	≥33.5	17.0–33.4	10.0–16.9
Events	217	122	32
Person-years	227625	104421	17049
Incidence	1.0	1.2	1.9
HR (95% CI), Model 1	1.0	1.3 (1.0–1.6)	2.1 (1.4–3.0)	0.0002
HR (95% CI), Model 2	1.0	1.2 (0.9–1.5)	1.7 (1.1–2.5)	0.0246
Combined
Events	1075	627	172
Person-years	1122451	514566	84800
Incidence	1.0	1.2	2.0
HR (95% CI), Model 1	1.0	1.3 (1.2–1.5)	2.2 (1.9–2.6)	<0.0001
HR (95% CI), Model 2	1.0	1.3 (1.1–1.4)	1.8 (1.6–2.2)	<0.0001

Incidence of dementia represents number of cases per 1000 person-years. Hazard ratio (95% CI) for incident dementia associated with 25(OH)D status was estimated using Cox proportional regression models. Model 1 was adjusted for age and gender; Model 2 was adjusted for model 1 plus the day of the year when serum was collected, ethnicity, education, income, diet score, vitamin D supplement, smoking, alcohol consumption, sleep, physical activity, BMI, cholesterol, glycosylated haemoglobin, cystatin C, depression, hypertension, diabetes, heart disease, and chronic kidney disease at baseline.