Table 2.

Odds Ratios (95% confidence intervals) for Acute Myocardial Infarction (AMI) risk for sleep and snoring with different levels of adjustments

Sleep and snoring	Case (%)	Control (%)	Odds ratio (95% CI)*	Adjusted OR (95% CI) †	Adjusted OR (95% CI) ‡	Adjusted OR (95% CI) §	Adjusted OR (95% CI) ||
Nap after lunch
No	1384 (47.8)	1488 (50.5)	1.00	1.00	1.00	1.00	1.00
Yes	1510 (52.2)	1458 (49.5)	1.06 (0.96-1.18)	1.00 (0.89-1.11)	1.05 (0.94-1.17)	1.00 (0.89-1.11)	0.94 (0.84-1.07)
Snoring frequency
No snoring	546 (19.2)	725 (25.0)	1.00	1.00	1.00	1.00	1.00
0-1 time per week	635 (22.4)	796 (27.4)	1.06 (0.91-1.24)	1.08 (0.92-1.26)	0.94 (0.80-1.10)	1.06 (0.90-1.24)	0.94 (0.80-1.12)
1-3 times per week	1115 (39.3)	1069 (36.8)	1.40 (1.21-1.62)	1.33 (1.15-1.55)	1.29 (1.11-1.50)	1.37 (1.18-1.60)	1.20 (1.02-1.42)
> 3 times per week	542 (19.1)	313 (10.8)	2.31 (1.93-2.76)	1.92 (1.59-2.31)	2.03 (1.67-2.46)	2.17 (1.80-2.62)	1.72 (1.40-2.11)
Snoring severity
No snoring	532 (19.4)	732 (26.1)	1.00	1.00	1.00	1.00	1.00
Mild	1647 (59.9)	1685 (60.1)	1.35 (1.18-1.54)	1.32 (1.14-1.51)	1.22 (1.06-1.41)	1.33 (1.16-1.53)	1.16 (1.00-1.35)
Moderate	404 (14.7)	298 (10.6)	1.87 (1.55-2.26)	1.60 (1.32-1.95)	1.66 (1.36-2.03)	1.77 (1.45-2.15)	1.37 (1.10-1.69)
Serious	166 (6.0)	87 (3.1)	2.70 (2.03-3.59)	2.08 (1.55-2.80)	2.18 (1.62-2.95)	2.65 (1.98-3.55)	1.77 (1.29-2.43)

*Model adjusted for age, sex and area.

^†Model adjusted for age, sex, area, hypertension, diabetes, stroke and family history of MI.

^‡Model adjusted for age, sex, area, whr, bmi, smoking, drinking, physical activity, consumption of vegetables and fruits.

^§Model adjusted for age, sex, area, educational status, household income, marital status, stress and depression.

^||Model adjusted for all the risk factors.