Table 1.
General characteristics of the ERICO study participants according to the presence of low- and high-risk for obstructive sleep apnea (OSA) 30 days after acute coronary syndrome
| Characteristics | Risk for OSA | p value | |
|---|---|---|---|
| Low n = 310 | High n = 329 | ||
| Men (%) | 201 (64.8) | 184 (55.9) | 0.02 |
| Mean age (years) (± SD) | 62.1 (13.1) | 63.1 (12.2) | 0.31 |
| Body mass index (kg/m2) (± SD) | 25.9 (4.2) | 28.0 (5.1) | <0.0001 |
| Marital status (%) | 0.50 | ||
| Single | 44 (14.2) | 35 (10.7) | |
| Married | 189 (61.2) | 210 (64) | |
| Divorced | 26 (8.4) | 24 (7.3) | |
| Widowed | 50 (16.2) | 59 (18) | |
| Education (%) | 0.23 | ||
| No formal education | 35 (11.3) | 42 (12.8) | |
| Elementary | 183 (59) | 198 (60.2) | |
| High-school | 56 (18.1) | 66 (20.1) | |
| College | 36 (11.6) | 23 (7.0) | |
| Previous history of coronary heart disease (%) | 61 (20.5) | 101 (31.9) | 0.001 |
| Family history of coronary heart dis-ease (%) | 71 (29.2) | 102 (39.2) | 0.02 |
| Obesity (%) | 41 (13.4) | 113 (34.8) | <0.0001 |
| Hypertension (%) | 182 (59.9) | 300 (92) | <0.0001 |
| Diabetes (%) | 100 (32.9) | 131 (40.7) | 0.04 |
| Dyslipidemia (%) | 135 (48.7) | 168 (56) | 0.08 |
| Smoking (%) | 0.29 | ||
| Current | 102 (33.2) | 89 (27.5) | |
| Past | 119 (38.8) | 135 (41.7) | |
| Never | 86 (28) | 100 (30.9) | |
| Sedentary lifestyle (%) | 201 (67.2) | 240 (75.5) | 0.02 |
| Type of acute coronary syndrome (%) | <0.0001 | ||
| Angina | 74 (23.9) | 112 (34.0) | |
| Non-ST myocardial infarction | 127 (41.0) | 148 (45.0) | |
| ST myocardial infarction | 109 (35.2) | 69 (21.) | |
| Mean ejection fraction (%) (± SD) | 55.8 (13.1) | 56.2 (13.2) | 0.79 |
p-values were derived from Chi-Square for categorical variables or Student t-test for continuous variables. SD: standard deviation.