Table 5.

Association of ever opium use and the age of coronary artery disease diagnosis at Tehran Heart Center: subgroup analyses

	Adjusted coefficient (95% CI)a	p-value
Age, tertiles (years)
≤ 55	0.18 (− 0.02, 0.38)	0.075
56–65	− 0.17 (− 0.29, − 0.05)	0.004
≥ 66	− 1.07 (− 1.31, − 0.83)	< 0.001
Sex
Male	− 2.23 (− 2.48, − 1.98)	< 0.001
Female	− 1.14 (− 2.11, − 0.16)	0.022
Dyslipidemia
Yes	− 1.98 (− 2.27, − 1.68)	< 0.001
No	− 2.57 (− 2.97, − 2.17)	< 0.001
Diabetes mellitus
Yes	− 1.53 (− 1.96, − 1.11)	< 0.001
No	− 2.41 (− 2.70, − 2.12)	< 0.001
Hypertension
Yes	− 2.10 (− 2.43, − 1.77)	< 0.001
No	− 2.26 (− 2.60, − 1.91)	< 0.001
Cigarette smoking
Ever	− 2.44 (− 2.71, − 2.17)	< 0.001
Never	− 1.13 (− 1.63, − 0.63)	< 0.001

^aUsing linear regression models, adjusted for sex, body-mass index, low-density lipoprotein cholesterol, high-density lipoprotein cholesterol, triglycerides, dyslipidemia, fasting blood sugar, diabetes mellitus, hypertension, and cigarette smoking, if applicable