Table 1.

Prediction of Death by Components of the Modified Physiologic Index

Component Score	Events per 1,000 pyrs	HR (95% CI), Unadjusted	HR (95% CI), Age, Sex, Race	C-Statistic (95% CI), Unadjusted*
Systolic blood pressure
0	36	1.00	1.00
1	37	1.05 (0.89–1.23)	1.00 (0.85–1.17)	0.530 (0.507–0.553)
2	43	1.22 (1.05–1.42)	1.13 (0.97–1.32)
Forced vital capacity
0	26	1.00	1.00
1	37	1.43 (1.21–1.69)	1.28 (1.07–1.51)	0.534 (0.511–0.557)
2	55	2.19 (1.87–2.56)	1.85 (1.56–2.19)
DSST score
0	25	1.00	1.00
1	39	1.61 (1.36–1.90)	1.45 (1.23–1.72)	0.634 (0.612–0.655)
2	56	2.42 (2.06–2.85)	1.97 (1.64–2.37)
Serum cystatin-C
0	27	1.00	1.00
1	35	1.32 (1.12–1.57)	1.26 (1.06–1.49)	0.620 (0.598–0.642)
2	54	2.09 (1.78–2.50)	1.90 (1.61–2.24)
Serum fasting glucose
0	36	1.00	1.00
1	37	1.05 (0.90–1.23)	0.99 (0.85–1.16)	0.538 (0.515–0.561)
2	55	1.59 (1.34–1.89)	1.42 (1.19–1.68)

Notes: CI = confidence interval; DSST = Digit Symbol Substitution Test; HR = hazard ratio; and pyrs = person-years.

^*Unadjusted c-statistic for each component, modeled as a continuous variable, predicting death.