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. Author manuscript; available in PMC: 2024 Mar 1.
Published in final edited form as: Chronobiol Int. 2023 Jan 24;40(3):324–334. doi: 10.1080/07420528.2023.2170240

Table 3.

Cox proportional hazards regression for the association between time of day and CVD mortality stratified by chronotypes. *

Midday Group
(Reference)
Early Morning
Group
Late Morning
Group
Night Group
Morning-Type Individuals (n=53,328)

No. of Deaths 87 79 143 61
No. of Participants 13,074 13,257 17,043 9,954
Hazard Ratio 1 (Reference) 1.30 (0.95 – 1.77) 1.13 (0.87 – 1.48) 1.52 (1.09 – 2.11)
Evening-Type Individuals (n=30,962)

No. of Deaths 70 25 45 52
No. of Participants 11,542 3,554 5,887 9,979
Hazard Ratio 1 (Reference) 2.17 (1.36 – 3.48) 1.23 (0.85 – 1.80) 1.37 (0.95 – 1.98)
*

Adjusted for physical activity volume, age, sex, ethnicity, Townsend Deprivation Index, body-mass index, smoking, alcohol intake, healthy eating score, a family history of heart disease and stroke, hypertension, high cholesterol, diabetes, long-standing illness, a personal history of heart attack, angina, and stroke, and general health status.