A COX survival analysis was also performed: in addition to severe vitamin D deficiency, advanced age and higher levels of creatinine, troponin and IL-6 were independent predictors of survival (severe vitamin D deficiency: OR 5681, CI 95% 1114–28,974, p 0.037; age: OR 1110, CI 95% 1022–1206, p 0.013; troponin: OR 1003, CI 95% 1001–1005, p 0.012; IL-6: OR 1004, CI 95% 1001–1006, p 0.014; creatinine: OR 1281, CI 95% 1069–1.534, p 0.007). This evidence concerns the gene IL6 and vitamin D deficiency.