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Table 2 Odds Ratios (95% confidence intervals) for Acute Myocardial Infarction (AMI) risk for sleep and snoring with different levels of adjustments

From: Sleep duration, snoring habits and risk of acute myocardial infarction in China population: results of the INTERHEART study

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)
  1. *Model adjusted for age, sex and area.
  2. Model adjusted for age, sex, area, hypertension, diabetes, stroke and family history of MI.
  3. Model adjusted for age, sex, area, whr, bmi, smoking, drinking, physical activity, consumption of vegetables and fruits.
  4. §Model adjusted for age, sex, area, educational status, household income, marital status, stress and depression.
  5. ||Model adjusted for all the risk factors.