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Frequency of electrocardiographic changes in patients with primary hyperthyroidism with respect to age groups
| Age (years) | Sinus tachycardia | Atrial fibrillation | Total (n=103) | ||
|---|---|---|---|---|---|
| Yes | No | Yes | No | ||
| <25 | 13 (54.2%) | 11 (45.8%) | 1 (4.2%) | 23 (95.8%) | 24 (23.3%) |
| 26-30 | 19 (63.3%) | 11 (36.7%) | 1 (3.3%) | 29 (96.7%) | 30 (29.13%) |
| 31-35 | 13 (54.2%) | 11 (45.8%) | 3 (12.5%) | 21 (87.5%) | 24 (23.30%) |
| 36-40 | 17 (68%) | 8 (32%) | 7 (28%) | 18 (72%) | 25 (24.27%) |
| X2 | 1.48 | 9.83 | |||
| p-value | 0.68 | 0.02 | |||
