Impact of CMM on 8-year mortality (from recruitment)
| N | py | Deaths (n) | Death rate per 1000 py | Crude HR (95% CI) | Adjusted HR* (95% CI) | |
| Overall | ||||||
| With no CMM | 212 211 | 1 632 781 | 18 571 | 11.4 | 1 | 1 |
| With CMM | 39 478 | 289 248 | 7320 | 25.3 | 2.24 (2.18 to 2.30) | 1.22 (1.18 to 1.25) |
| Age 45–59† | ||||||
| With no CMM | 105 367 | 835 879 | 1973 | 2.4 | 1 | 1 |
| With CMM | 10 718 | 83 970 | 487 | 5.8 | 2.46 (2.23 to 2.72) | 1.49 (1.33 to 1.67) |
| Age 60–74 | ||||||
| With no CMM | 75 473 | 585 544 | 5328 | 9.1 | 1 | 1 |
| With CMM | 17 587 | 133 469 | 2054 | 15.4 | 1.70 (1.61 to 1.79) | 1.29 (1.22 to 1.36) |
| Age 75+ | ||||||
| With no CMM | 31 371 | 211 358 | 11 270 | 53.4 | 1 | 1 |
| With CMM | 11 173 | 71 809 | 4779 | 66.6 | 1.26 (1.22 to 1.31) | 1.08 (1.04 to 1.12) |
*Adjusted for sex, current working status, needing help with daily activities and good quality of life.
†P interaction <0.05, age versus CMM status.
CMM, complex multimorbidity; py, person-year.