| | OSA (n= 215) | Control (n= 40) | p | p, when age and gender controlled |
| Atrial Fibrillation, n () | 4 (1.9%) | 0 | 0.413 | |
| Left Atrial | 33 (15.3%) | 9 (22.5%) | 0.157 | | enlargement, n () |
| Right Ventricle | | | >0.05 | | hypertrophy, n () | 0 | 1 (2.5%) |
| Left Ventricle | | | >0.05 | | hypertrophy, n () | 32 (14.8%) | 7 (17.5%) | |
| Axis, Median ± SD | 15 ±37 | 27 ± 44.9 | >0.05 | |
| Right axis deviation, | 5 (2.3%) | 4(10%) | >0.05 | | (+90) - (+180), n () | |
| Left axis deviation, | 24 (11.2%) | 0 | >0.05 | | (-30) - (-90), n () | |
| Normal Axis, (+90) - (-90), n () | 186 (86.5%) | 36 (90%) | >0.05 | |
| Deep S in V5-6, n () | 84 (39.1%) | 8 (20%) | 0.014 | 0.17 |
| RS pattern with Deep S in Leads I and AVF, n () | 95 (44.2%) | 10 (25%) | 0.017 | 0.14 |
| Atrial Premature | | | >0.05 | | Contractions, n () | 6 (2.8%) | 0 | |
| Left Anterior | | | >0.05 | | Hemi block, n () | 13 (6%) | 0 | |
| Premature Ventricular | | | >0.05 | | Contractions, n () | 8 (3.7 %) | 0 | |
| Atrioventricular Block, n () | 9 (4.2 %) | 1 (2.5%) | >0.05 | |
| Right Bundle Branch | | | >0.05 | | Block, n () | 8 (3.7 %) | 0 | |
| Heart Rate, Median ±SD | 75 ±14.3 | 72 ± 19.5 | >0.05 | |
| Bradycardia, n () | 23 (10.7 %) | 6 (15%) | >0.05 | |
| Tachycardia, n () | 12 (5.6 %) | 4 (10%) | >0.05 | |
| Normal Heart Rate, n () | 181 (84.2%) | 30 (75%) | >0.05 | |
| QTc, Median ±SD | 434 ± 31.6 | 430 ± 79.8 | >0.05 | |
| Prolonged QTc, n () | 8 (3.7 %) | 5 (12.5%) | >0.05 | |
| PR, Median ±SD | 160 ± 28.3 | 158.5 ± 26.4 | >0.05 | |
| QRS, Median ±SD | 92 ± 14.7 | 88 ± 8.9 | >0.05 | |
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