Baseline variables | Level | All eligible patients | COPD incidence (GP diagnosed) | COPD incidence (hospital admission) | ||
---|---|---|---|---|---|---|
N | n | Age–sex adjusted (%) | n | Age–sex adjusted (%) | ||
All | – | 812 063 | 16 034 | 1.92 | 2910 | 0.35 |
Sex | Male | 392 574 | 8382 | 2.18 | 1435 | 0.38 |
Female | 419 489 | 7652 | 1.84 | 1475 | 0.36 | |
Age (years) | 40–49 | 241 580 | 1144 | 0.47 | 157 | 0.07 |
50–59 | 224 817 | 3472 | 1.55 | 400 | 0.18 | |
60–69 | 159 628 | 4846 | 3.04 | 728 | 0.46 | |
70–79 | 119 832 | 4728 | 3.95 | 965 | 0.81 | |
80–89 | 66 206 | 1844 | 2.80 | 660 | 1.01 | |
Smoking | Non | 381 579 | 2781 | 0.75 | 450 | 0.12 |
Ex (unknown) | 72 646 | 1390 | 1.43 | 265 | 0.26 | |
Ex (1–19 cigarettes/day) | 50 670 | 1906 | 3.39 | 334 | 0.60 | |
Ex (20–39 cigarettes/day) | 23 896 | 1389 | 5.63 | 204 | 0.90 | |
Ex (40+ cigarettes/day) | 4616 | 330 | 6.32 | 48 | 0.82 | |
Current (unknown) | 17 048 | 268 | 1.28 | 60 | 0.26 | |
Current (1–19 cigarettes/day) | 84 386 | 3449 | 4.87 | 685 | 1.10 | |
Current (20–39 cigarettes/day) | 48 246 | 2572 | 7.07 | 471 | 1.69 | |
Current (40+ cigarettes/day) | 4246 | 361 | 9.20 | 63 | 1.73 | |
Not recorded | 124 730 | 1588 | 1.27 | 330 | 0.29 | |
BMI (kg/m2) | <20 | 31 134 | 935 | 4.04 | 232 | 0.99 |
≥20 and <25 | 262 208 | 5263 | 2.16 | 830 | 0.35 | |
≥25 and <30 | 236 394 | 4715 | 1.85 | 783 | 0.31 | |
≥30 | 105 469 | 2373 | 2.23 | 475 | 0.46 | |
Not recorded | 176 858 | 2748 | 1.72 | 590 | 0.36 | |
Practice Region | North | 307 826 | 7270 | 2.39 | 1305 | 0.44 |
South (excluding London) | 414 539 | 7259 | 1.76 | 1313 | 0.32 | |
London | 89 698 | 1505 | 1.86 | 292 | 0.37 | |
IMD Decile | 1 (most deprived) | 44 037 | 1785 | 4.18 | 380 | 0.88 |
=2 | 53 439 | 1640 | 3.19 | 323 | 0.62 | |
=3 | 67 133 | 1906 | 2.89 | 371 | 0.56 | |
=4 | 74 147 | 1726 | 2.36 | 354 | 0.48 | |
=5 | 79 579 | 1586 | 1.97 | 287 | 0.35 | |
=6 | 87 057 | 1648 | 1.92 | 293 | 0.35 | |
=7 | 92 102 | 1517 | 1.65 | 289 | 0.32 | |
=8 | 111 891 | 1737 | 1.57 | 251 | 0.23 | |
=9 | 94 877 | 1361 | 1.48 | 195 | 0.22 | |
=10 (least deprived) | 106 870 | 1113 | 1.13 | 167 | 0.18 |
BMI, body mass index; COPD, chronic obstructive pulmonary disease; GP, general practitioner; IMD, Index of Multiple Deprivation.