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Impact of co-morbidity on mortality
| Comorbidity | No. of deaths in surgical group (n = 12) | No. of deaths in non-surgical group (n = 7) | Total deaths (n = 19) | P-value |
| Diabetes (n = 4) | 1 | 2 | 3 | > 0.05 |
| Chronic obstructive pulmonary disease (n = 5) | 2 | 2 | 4 | < 0.05 |
| Anemia (n = 35) | 4 | 3 | 7 | < 0.05 |
P > 0.05 (insignificant), P < 0.05 (significant).
