. 2019 Oct 4;8(20):e013269. doi: 10.1161/JAHA.119.013269

Table 6.

Model Results for BP Medication Use at 5YFU Regressed on the Interaction of Circadian Preference and Shift Work and Their Main Effects (N=9200)

Variable	OR^a	95% CI	P Value
Shift work
Shift work	0.80	0.51–1.25	0.32
No shift work	REF	REF	REF
Circadian preference
Morning	0.97	0.79–1.19	0.74
Intermediate	REF	REF	REF
Evening	1.05	0.77–1.44	0.75
Circadian preference×shift work
Morning—shift work	2.05	1.02–4.13	0.04^b
Intermediate—no shift work	REF	REF	REF
Evening—shift work	1.26	0.47–3.40	0.65

BP indicates blood pressure; OR, odds ratio; REF, reference category; 5YFU, 5‐year follow‐up.

Model was adjusted for age, sex, race, education, employment status, urban/rural, family history of cardiovascular disease, depression status, alcohol intake, physical activity, diet, smoking, and body mass index.

P<0.01.