Incidence and risks of all-cause and cause-specific mortality in older people
Platelet count, ×109/L . | No. of events . | No. of person-years . | Incidence rate* . | Cox proportional hazard models . | |||
---|---|---|---|---|---|---|---|
Crude HR (95% CI) . | P . | Adjusted HR† (95% CI) . | P . | ||||
All-cause mortality | |||||||
<100 | 602 | 10 730 | 56.10 | 2.80 (2.58-3.04) | <.001 | 1.93 (1.77-2.11) | <.001 |
100 to <200 | 7598 | 304 486 | 24.95 | 1.25 (1.21-1.29) | <.001 | 1.08 (1.05-1.12) | <.001 |
200 to <300 | 7827 | 393 530 | 19.89 | 1 | 1 | ||
300 to <400 | 1384 | 52 724 | 26.25 | 1.33 (1.26-1.41) | <.001 | 1.18 (1.11-1.25) | <.001 |
≥400 | 348 | 5 987 | 58.13 | 3.00 (2.69-3.33) | <.001 | 1.67 (1.49-1.87) | <.001 |
Cardiovascular mortality‡ | |||||||
<100 | 72 | 9 256 | 7.78 | 1.78 (1.41-2.26) | <.001 | 1.24 (0.97-1.59) | .086 |
100 to <200 | 1405 | 267 048 | 5.26 | 1.20 (1.12-1.29) | <.001 | 1.06 (0.98-1.14) | .151 |
200 to <300 | 1529 | 350 235 | 4.37 | 1 | 1 | ||
300 to <400 | 215 | 47 125 | 4.56 | 1.05 (0.91-1.21) | .511 | 0.96 (0.82-1.11) | .568 |
≥400 | 50 | 5 233 | 9.55 | 2.17 (1.63-2.89) | <.001 | 1.38 (1.02-1.86) | .037 |
Thrombotic CV mortality‡ | |||||||
<100 | 57 | 9 256 | 6.16 | 1.59 (1.22-2.07) | .001 | 1.10 (0.84-1.45) | .494 |
100 to <200 | 1223 | 267 048 | 4.58 | 1.18 (1.09-1.28) | <.001 | 1.04 (0.95-1.12) | .406 |
200 to <300 | 1355 | 350 235 | 3.87 | 1 | 1 | ||
300 to <400 | 191 | 47 125 | 4.05 | 1.05 (0.90-1.22) | .518 | 0.94 (0.80-1.11) | .487 |
≥400 | 47 | 5 233 | 8.98 | 2.30 (1.71-3.09) | <.001 | 1.44 (1.06-1.97) | .021 |
Hemorrhagic CV mortality‡ | |||||||
<100 | 15 | 9 256 | 1.62 | 3.28 (1.94-5.56) | <.001 | 2.32 (1.33-4.04) | .003 |
100 to <200 | 182 | 267 048 | 0.68 | 1.36 (1.11-1.68) | .004 | 1.21 (0.97-1.52) | .094 |
200 to <300 | 174 | 350 235 | 0.50 | 1 | 1 | ||
300 to <400 | 24 | 47 125 | 0.51 | 1.03 (0.67-1.58) | .884 | 1.08 (0.71-1.67) | .720 |
≥400 | 3 | 5 233 | 0.57 | 1.17 (0.37-3.66) | .790 | 0.91 (0.29-2.89) | .875 |
Cancer mortality | |||||||
<100 | 233 | 10 730 | 21.71 | 3.47 (3.03-3.97) | <.001 | 2.66 (2.31-3.05) | <.001 |
100 to <200 | 2392 | 304 486 | 7.86 | 1.26 (1.19-1.33) | <.001 | 1.10 (1.03-1.16) | .003 |
200 to <300 | 2448 | 393 530 | 6.22 | 1 | 1 | ||
300 to <400 | 457 | 52 724 | 8.67 | 1.40 (1.26-1.54) | <.001 | 1.31 (1.18-1.45) | <.001 |
≥400 | 106 | 5 987 | 17.71 | 2.86 (2.35-3.48) | <.001 | 1.91 (1.55-2.35) | <.001 |
Sepsis mortality | |||||||
<100 | 61 | 10 730 | 5.68 | 2.75 (2.12-3.57) | <.001 | 1.74 (1.32-2.29) | <.001 |
100 to <200 | 780 | 304 486 | 2.56 | 1.25 (1.13-1.38) | <.001 | 1.06 (0.95-1.18) | .276 |
200 to <300 | 806 | 393 530 | 2.05 | 1 | 1 | ||
300 to <400 | 142 | 52 724 | 2.69 | 1.29 (1.08-1.55) | <.001 | 1.06 (0.87-1.28) | .583 |
≥400 | 52 | 5 987 | 8.69 | 4.31 (3.25-5.70) | <.001 | 1.85 (1.37-2.49) | <.001 |
Mortality due to other causes | |||||||
<100 | 207 | 10 730 | 19.29 | 2.82 (2.45-3.25) | <.001 | 1.84 (1.59-2.13) | <.001 |
100 to <200 | 2585 | 304 486 | 8.49 | 1.25 (1.18-1.32) | <.001 | 1.08 (1.02-1.14) | .009 |
200 to <300 | 2665 | 393 530 | 6.77 | 1 | 1 | ||
300 to <400 | 500 | 52 724 | 9.48 | 1.43 (1.30-1.57) | <.001 | 1.22 (1.10-1.34) | <.001 |
≥400 | 129 | 5 987 | 21.55 | 3.32 (2.78-3.95) | <.001 | 1.56 (1.30-1.89) | <.001 |
Platelet count, ×109/L . | No. of events . | No. of person-years . | Incidence rate* . | Cox proportional hazard models . | |||
---|---|---|---|---|---|---|---|
Crude HR (95% CI) . | P . | Adjusted HR† (95% CI) . | P . | ||||
All-cause mortality | |||||||
<100 | 602 | 10 730 | 56.10 | 2.80 (2.58-3.04) | <.001 | 1.93 (1.77-2.11) | <.001 |
100 to <200 | 7598 | 304 486 | 24.95 | 1.25 (1.21-1.29) | <.001 | 1.08 (1.05-1.12) | <.001 |
200 to <300 | 7827 | 393 530 | 19.89 | 1 | 1 | ||
300 to <400 | 1384 | 52 724 | 26.25 | 1.33 (1.26-1.41) | <.001 | 1.18 (1.11-1.25) | <.001 |
≥400 | 348 | 5 987 | 58.13 | 3.00 (2.69-3.33) | <.001 | 1.67 (1.49-1.87) | <.001 |
Cardiovascular mortality‡ | |||||||
<100 | 72 | 9 256 | 7.78 | 1.78 (1.41-2.26) | <.001 | 1.24 (0.97-1.59) | .086 |
100 to <200 | 1405 | 267 048 | 5.26 | 1.20 (1.12-1.29) | <.001 | 1.06 (0.98-1.14) | .151 |
200 to <300 | 1529 | 350 235 | 4.37 | 1 | 1 | ||
300 to <400 | 215 | 47 125 | 4.56 | 1.05 (0.91-1.21) | .511 | 0.96 (0.82-1.11) | .568 |
≥400 | 50 | 5 233 | 9.55 | 2.17 (1.63-2.89) | <.001 | 1.38 (1.02-1.86) | .037 |
Thrombotic CV mortality‡ | |||||||
<100 | 57 | 9 256 | 6.16 | 1.59 (1.22-2.07) | .001 | 1.10 (0.84-1.45) | .494 |
100 to <200 | 1223 | 267 048 | 4.58 | 1.18 (1.09-1.28) | <.001 | 1.04 (0.95-1.12) | .406 |
200 to <300 | 1355 | 350 235 | 3.87 | 1 | 1 | ||
300 to <400 | 191 | 47 125 | 4.05 | 1.05 (0.90-1.22) | .518 | 0.94 (0.80-1.11) | .487 |
≥400 | 47 | 5 233 | 8.98 | 2.30 (1.71-3.09) | <.001 | 1.44 (1.06-1.97) | .021 |
Hemorrhagic CV mortality‡ | |||||||
<100 | 15 | 9 256 | 1.62 | 3.28 (1.94-5.56) | <.001 | 2.32 (1.33-4.04) | .003 |
100 to <200 | 182 | 267 048 | 0.68 | 1.36 (1.11-1.68) | .004 | 1.21 (0.97-1.52) | .094 |
200 to <300 | 174 | 350 235 | 0.50 | 1 | 1 | ||
300 to <400 | 24 | 47 125 | 0.51 | 1.03 (0.67-1.58) | .884 | 1.08 (0.71-1.67) | .720 |
≥400 | 3 | 5 233 | 0.57 | 1.17 (0.37-3.66) | .790 | 0.91 (0.29-2.89) | .875 |
Cancer mortality | |||||||
<100 | 233 | 10 730 | 21.71 | 3.47 (3.03-3.97) | <.001 | 2.66 (2.31-3.05) | <.001 |
100 to <200 | 2392 | 304 486 | 7.86 | 1.26 (1.19-1.33) | <.001 | 1.10 (1.03-1.16) | .003 |
200 to <300 | 2448 | 393 530 | 6.22 | 1 | 1 | ||
300 to <400 | 457 | 52 724 | 8.67 | 1.40 (1.26-1.54) | <.001 | 1.31 (1.18-1.45) | <.001 |
≥400 | 106 | 5 987 | 17.71 | 2.86 (2.35-3.48) | <.001 | 1.91 (1.55-2.35) | <.001 |
Sepsis mortality | |||||||
<100 | 61 | 10 730 | 5.68 | 2.75 (2.12-3.57) | <.001 | 1.74 (1.32-2.29) | <.001 |
100 to <200 | 780 | 304 486 | 2.56 | 1.25 (1.13-1.38) | <.001 | 1.06 (0.95-1.18) | .276 |
200 to <300 | 806 | 393 530 | 2.05 | 1 | 1 | ||
300 to <400 | 142 | 52 724 | 2.69 | 1.29 (1.08-1.55) | <.001 | 1.06 (0.87-1.28) | .583 |
≥400 | 52 | 5 987 | 8.69 | 4.31 (3.25-5.70) | <.001 | 1.85 (1.37-2.49) | <.001 |
Mortality due to other causes | |||||||
<100 | 207 | 10 730 | 19.29 | 2.82 (2.45-3.25) | <.001 | 1.84 (1.59-2.13) | <.001 |
100 to <200 | 2585 | 304 486 | 8.49 | 1.25 (1.18-1.32) | <.001 | 1.08 (1.02-1.14) | .009 |
200 to <300 | 2665 | 393 530 | 6.77 | 1 | 1 | ||
300 to <400 | 500 | 52 724 | 9.48 | 1.43 (1.30-1.57) | <.001 | 1.22 (1.10-1.34) | <.001 |
≥400 | 129 | 5 987 | 21.55 | 3.32 (2.78-3.95) | <.001 | 1.56 (1.30-1.89) | <.001 |
CI, confidence interval; CV, cardiovascular; HR, hazard ratio.
Per 1000 person-years.
Adjusted for age, sex, smoking, alcohol use, systolic and diastolic pressure, pulse rate, estimated glomerular filtration rate, diabetes mellitus, hypertension, coronary artery disease, cerebrovascular disease, total serum cholesterol, triglyceride, high-density lipoprotein cholesterol, hemoglobin, fasting glucose, serum albumin, body mass index, white blood cell count, and uric acid.
For the analysis of cardiovascular death, we excluded older people with a history of cardiovascular disease at baseline. Finally, 114 944 participants without cardiovascular disease entered this model.