Table 2.
Differences in Patients Characteristics According to the Presence of MAR
| MAR Negative Subjects | MAR Positive Subjects | P‐Value | |
|---|---|---|---|
| Subjects (%) | 267 (94) | 16 (6) | |
| Age (years) | 78 ± 11 | 86 ± 13 | 0.005 |
| Male/female sex (%) | 49/51 | 25/75 | 0.05 |
| Body mass index (kg/m2) | 27.56 ± 4.14 | 26.66 ± 4.23 | 0.42 |
| Obese (%) | 26 | 21 | 0.72 |
| Arterial hypertension (%) | 82 | 88 | 0.55 |
| Creatinine clearance (mL/min) | 61 ± 22 | 51 ± 18 | 0.11 |
| Serum potassium levels (mg/dL) | 4.56 ± 0.59 | 4.47 ± 0.50 | 0.61 |
| Diabetes mellitus (%) | 28 | 25 | 0.78 |
| Current smokers (%) | 18 | 6 | 0.22 |
| Cardiovascular disease (%) | 17 | 20 | 0.80 |
| Pulmonary disease (%) | 15 | 35 | 0.07 |
| Thyroid dysfunction (%) | 31 | 32 | 0.14 |
| Hypothyroidism (%) | 24 | 13 | |
| Hyperthyroidism (%) | 7 | 19 | |
| Physically active (%) | 86 | 60 | 0.007 |
| Pulmonary artery systolic pressure (mmHg) | 36 ± 9 | 39 ± 12 | 0.21 |
| Left ventricle ejection fraction (%) | 58 ± 6 | 58 ± 5 | 0.67 |
| Left atrial volume (mL) | 51(40–65) | 47(36–57) | 0.24 |
| Left atrial volume index (mL/m2) | 28.6 (22.8–35.0) | 24.8(22.7–32.8) | 0.67 |
| β‐blockers administration (%) | 16 | 19 | 0.75 |
| β‐adrenergic receptor agonists (%) | 3 | 0 | 0.45 |
| Digitalis (%) | 4 | 6 | 0.68 |
| Right bundle branch block (%) | 6 | 13 | 0.34 |
| Left bundle branch block (%) | 1 | 0 | 0.67 |
| Left anterior fascicular block (%) | 15 | 13 | 0.75 |
| Bifascicular block (%) | 6 | 0 | 0.33 |
| Trifascicular block (%) | 1 | 0 | 0.67 |
Values are presented as mean ± standard deviation and as median quartiles for continuous variables normally and not normally distributed, respectively. Categorical variables are presented as valid percentages. For continuous variables normally and not normally distributed, P‐values were based on t‐test and Mann‐Whitney test, respectively. For categorical variables, P values were calculated based on chi‐square test. MAR = multifocal atrial rhythm.