A grading system from health to death using routine experimental indicators based on the pre-chronic disease status theory

Table 4 Biological age index and rate in different levels of health and pre-chronic disease in age groups

Age	N	Mean ± SD	Pre-chronic disease (%)				Health (%)					P
Age	N	Mean ± SD	2.00	1.75	1.50	1.25	1	0.75	0.50	0.25	0	P
20-	170	0.51 ± 0.31	0	0	2.4	5.3	0.6	18.2	41.2	25.9	6.5
30-	328	0.61 ± 0.31	0	0	1.2	9.1	5.5	23.2	41.5	17.1	2.4
40-	386	0.64 ± 0.30	0	0.3	1.6	8.5	3.9	30.1	40.9	13.5	1.3
50-	295	0.70 ± 0.35	0	0	2.4	15.9	7.5	24.1	35.3	13.6	1.4	< 0.001
60-	117	0.70 ± 0.33	0	0	1.7	15.4	5.1	29.1	35.9	12.0	0.9
70-	436	0.85 ± 0.37	0	0.7	5.5	26.6	6.9	27.1	26.4	6.7	0.2
≥80	218	0.95 ± 0.38	0.5	1.8	12.8	23.4	12.4	27.1	17.9	4.1	0

ISSN: 1471-2318