Table 1.
Patient characteristics for each cohort
| Characteristics | Year | |||||||
|---|---|---|---|---|---|---|---|---|
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| 2015 | 2016 | 2017 | 2018 | |||||
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|
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| n (N = 23 828) | % | n (N = 27 443) | % | n (N =31 554) | % | n (N = 34 651) | % | |
| Sex | ||||||||
| Female | 13 178 | 55.3 | 15 246 | 55.6 | 17 506 | 55.5 | 19 463 | 56.2 |
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| ||||||||
| Age group, years | ||||||||
| <45 | 3293 | 13.8 | 3958 | 14.4 | 4619 | 14.6 | 5227 | 15.1 |
| 45 to <65 | 6760 | 28.4 | 7661 | 27.9 | 8600 | 27.3 | 9295 | 26.8 |
| 65 to <75 | 5542 | 23.3 | 5957 | 21.7 | 6601 | 20.9 | 7007 | 20.2 |
| 75 to <85 | 6002 | 25.2 | 6952 | 25.3 | 7948 | 25.2 | 8470 | 24.4 |
| >85 | 2231 | 9.4 | 2915 | 10.6 | 3786 | 12.0 | 4652 | 13.4 |
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| ||||||||
| Deprivation level, IMD | ||||||||
| 1 (most) | 3166 | 13.3 | 3883 | 14.1 | 4656 | 14.8 | 5205 | 15.0 |
| 2 | 6568 | 27.6 | 7673 | 28.0 | 9001 | 28.5 | 9954 | 28.7 |
| 3 | 5869 | 24.6 | 6833 | 24.9 | 7875 | 25.0 | 8759 | 25.3 |
| 4 | 4089 | 17.2 | 4596 | 16.7 | 5197 | 16.5 | 5653 | 16.3 |
| 5 (least) | 3430 | 14.4 | 3636 | 13.2 | 3866 | 12.3 | 3975 | 11.5 |
| Unknown | 706 | 3.0 | 822 | 3.0 | 959 | 3.0 | 1105 | 3.2 |
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| ||||||||
| Ethnicity | ||||||||
| White | 7712 | 32.4 | 8741 | 31.9 | 9963 | 31.6 | 10 793 | 31.1 |
| Asian | 6237 | 26.2 | 7147 | 26.0 | 8161 | 25.9 | 8905 | 25.7 |
| Black | 1721 | 7.2 | 1990 | 7.3 | 2245 | 7.1 | 2412 | 7.0 |
| Mixed | 1767 | 7.4 | 2162 | 7.9 | 2630 | 8.3 | 3087 | 8.9 |
| Unknown | 6391 | 26.8 | 7403 | 27.0 | 8555 | 27.1 | 9454 | 27.3 |
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| Care status | ||||||||
| Care home | 619 | 2.6 | 682 | 2.5 | 732 | 2.3 | 686 | 2.0 |
| Have carer | 125 | 0.5 | 162 | 0.6 | 191 | 0.6 | 219 | 0.6 |
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| Status | ||||||||
| Died | 1294 | 5.4 | 1543 | 5.6 | 1811 | 5.7 | 2351 | 6.8 |
| Opted out | — | 0.0 | 21 | 0.1 | 92 | 0.3 | 5 | 0.0 |
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| Smoking status | ||||||||
| Non | 9612 | 40.3 | 11 455 | 41.7 | 13 395 | 42.5 | 14 955 | 43.2 |
| Current | 2290 | 9.6 | 2648 | 9.6 | 3174 | 10.1 | 3377 | 9.7 |
| Former | 7626 | 32.0 | 8390 | 30.6 | 9267 | 29.4 | 9685 | 28.0 |
| Unknown | 4300 | 18.0 | 4950 | 18.0 | 5718 | 18.1 | 6634 | 19.1 |
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| ||||||||
| Drinking status | ||||||||
| Non | 1607 | 6.7 | 1934 | 7.0 | 2079 | 6.6 | 2197 | 6.3 |
| Current | 382 | 1.6 | 439 | 1.6 | 485 | 1.5 | 578 | 1.7 |
| Former | 43 | 0.2 | 58 | 0.2 | 70 | 0.2 | 83 | 0.2 |
| Unknown | 21 796 | 91.5 | 25 012 | 91.1 | 28 920 | 91.7 | 31 793 | 91.8 |
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| BMI category | ||||||||
| Underweight | 423 | 1.8 | 526 | 1.9 | 714 | 2.3 | 1000 | 2.9 |
| Ideal | 5210 | 21.9 | 6000 | 21.9 | 7032 | 22.3 | 7814 | 22.6 |
| Overweight | 6296 | 26.4 | 7089 | 25.8 | 7959 | 25.2 | 8503 | 24.5 |
| Obese | 6255 | 26.3 | 7213 | 26.3 | 8323 | 26.4 | 8891 | 25.7 |
| Unknown | 5644 | 23.7 | 6615 | 24.1 | 7526 | 23.9 | 8443 | 24.4 |
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| ||||||||
| Systolic blood pressure, mm Hg | ||||||||
| <110 | 1109 | 4.7 | 1303 | 4.7 | 1535 | 4.9 | 1789 | 5.2 |
| 110–119 | 2386 | 10.0 | 2886 | 10.5 | 3497 | 11.1 | 3966 | 11.4 |
| 120–139 | 10 943 | 45.9 | 12 768 | 46.5 | 14 820 | 47.0 | 16 465 | 47.5 |
| 140–159 | 5925 | 24.9 | 6540 | 23.8 | 7270 | 23.0 | 7623 | 22.0 |
| >159 | 510 | 2.1 | 570 | 2.1 | 627 | 2.0 | 609 | 1.8 |
| Unknown | 2955 | 12.4 | 3376 | 12.3 | 3805 | 12.1 | 4199 | 12.1 |
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| ||||||||
| Diastolic blood pressure, mm Hg | ||||||||
| <80 | 13 969 | 58.6 | 16 434 | 59.9 | 19 215 | 60.9 | 21 261 | 61.4 |
| 80 to 89 | 5586 | 23.4 | 6195 | 22.6 | 6959 | 22.1 | 7536 | 21.7 |
| 90 to 99 | 962 | 4.0 | 1053 | 3.8 | 1159 | 3.7 | 1219 | 3.5 |
| >99 | 134 | 0.6 | 148 | 0.5 | 166 | 0.5 | 179 | 0.5 |
| Unknown | 3177 | 13.3 | 3613 | 13.2 | 4055 | 12.9 | 4456 | 12.9 |
|
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| Comorbidities | ||||||||
| Acute myocardial infarction | 1006 | 4.2 | 1123 | 4.1 | 1309 | 4.1 | 1398 | 4.0 |
| Atrial fibrillation | 2700 | 11.3 | 3362 | 12.3 | 4018 | 12.7 | 4549 | 13.1 |
| Chronic pulmonary disease | 3346 | 14.0 | 3928 | 14.3 | 4623 | 14.7 | 5084 | 14.7 |
| Congenital heart disease | 73 | 0.3 | 91 | 0.3 | 122 | 0.4 | 135 | 0.4 |
| Coronary heart disease | 1516 | 6.4 | 1658 | 6.0 | 1856 | 5.9 | 1965 | 5.7 |
| Diabetes | 6116 | 25.7 | 7102 | 25.9 | 8208 | 26.0 | 9053 | 26.1 |
| Hypertension | 10 474 | 44.0 | 11 352 | 41.4 | 12 241 | 38.8 | 12 507 | 36.1 |
| Myocardial infarction | 1034 | 4.3 | 1146 | 4.2 | 1331 | 4.2 | 1444 | 4.2 |
| Myocarditis | 614 | 2.6 | 697 | 2.5 | 797 | 2.5 | 868 | 2.5 |
| Other arrhythmias | 2181 | 9.2 | 2680 | 9.8 | 3266 | 10.4 | 3782 | 10.9 |
| Peripheral vascular disease | 563 | 2.4 | 634 | 2.3 | 681 | 2.2 | 771 | 2.2 |
| Renal diseases | 1048 | 4.4 | 1129 | 4.1 | 1301 | 4.1 | 1400 | 4.0 |
| Stroke | 667 | 2.8 | 762 | 2.8 | 933 | 3.0 | 1052 | 3.0 |
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| Comorbidities, n | ||||||||
| 0 | 7793 | 32.7 | 9329 | 34.0 | 11 073 | 35.1 | 12 559 | 36.2 |
| 1 | 7155 | 30.0 | 7978 | 29.1 | 8950 | 28.4 | 9667 | 27.9 |
| 2 | 4976 | 20.9 | 5640 | 20.6 | 6264 | 19.9 | 6659 | 19.2 |
| 3 | 2291 | 9.6 | 2632 | 9.6 | 3082 | 9.8 | 3363 | 9.7 |
| ≥4 | 1613 | 6.8 | 1864 | 6.8 | 2185 | 6.9 | 2403 | 6.9 |
BMI = body mass index. IMD = Index of Multiple Deprivation.