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Investigation of the frequency distribution of underlying diseases in the studied patients by peak
| Underlying diseases | First peak, n (%) | Second peak, n (%) | Third peak, n (%) | P* |
|---|---|---|---|---|
| Diabetes | 9 (14.5) | 25 (40) | 26 (37) | 0.001 |
| Cardiovascular | 19 (30.5) | 20 (32) | 27 (38) | 0.09 |
| Chronic lung disease | 15 (24) | 6 (10) | 3 (5) | 0.001 |
| Hepatic diseases | 0 | 2 (3) | 2 (3) | 0.08 |
| Renal diseases | 8 (11) | 6 (10) | 7 (10) | 0.50 |
| Cancer | 12 (20) | 3 (5) | 5 (7) | 0.001 |
| Total | 62 | 62 | 70 | - |
*Using one-way ANOVA test
