Table 1.
Patient demographics and baseline characteristics
| Characteristic | label | p-value2 | |
|---|---|---|---|
| High risk, N = 731 | Low risk, N = 741 | ||
| Gender | 0.026 | ||
| Male | 39 (53%) | 26 (35%) | |
| Female | 34 (47%) | 48 (65%) | |
| Age | 0.887 | ||
| -45 | 15 (21%) | 13 (18%) | |
| 46–61 | 37 (51%) | 38 (51%) | |
| 62- | 21 (29%) | 23 (31%) | |
| Cough | 0.862 | ||
| No | 60 (82%) | 60 (81%) | |
| Yes | 13 (18%) | 14 (19%) | |
| Myasthenia gravis | 0.967 | ||
| No | 58 (79%) | 59 (80%) | |
| Yes | 15 (21%) | 15 (20%) | |
| Chest pain | 0.049 | ||
| No | 50 (68%) | 61 (82%) | |
| Yes | 23 (32%) | 13 (18%) | |
| Chest distress | 0.953 | ||
| No | 48 (66%) | 49 (66%) | |
| Yes | 25 (34%) | 25 (34%) | |
| Symptoms | 0.736 | ||
| No | 56 (77%) | 55 (74%) | |
| Yes | 17 (23%) | 19 (26%) | |
1n (%), 2Pearson’s Chi-squared test.