Table 3.

The Cox proportional hazards model univariate survival analysis for functional and biochemical measures (hazard ratio of death per unit of measure)

Measure	Hazard ratio	95 % confidence interval	P value
MMSE, pointsa	0.934	0.896–0.975	.002
Katz ADL, pointsa	0.840	0.716–0.985	.032
Barthel Index, pointsa	0.988	0.977–0.999	.026
Albumin, g/Lb	0.926	0.870–0.986	.016
White blood cells, G/Lb	1.161	1.059–1.273	.001
C-reactive protein, mg/Lb	1.032	1.014–1.050	<.001
TNF-αc	1.024	0.960–1.091	.473
IL-6, pg/mLc	1.182	1.047–1.335	.007
ET-1, pg/mLc	3.711	1.233–11.169	.020

^aAnalysis of 86 centenarians, among them 52 survivors and 34 non-survivors

^bAnalysis of 84 centenarians, among them 52 survivors and 32 non-survivors

^cAnalysis of 43 centenarians, among them 28 survivors and 15 non-survivors