AMI recording (outcome, compared with people with AMI recorded in MINAP and HES) | CKD stage (exposure) | Number of AMI admissions, n= | Unadjusted* RR (95% CI) | Partially adjusted† RRR (95% CI) | Adjusted‡ RRR (95% CI) |
MINAP only (N=742) | At risk of CKD/stages 1–2 | 196 | 1 | 1 | 1 |
Stage 3a | 245 | 1.07 (0.85 to 1.34) | 0.98 (0.77 to 1.25) | 0.98 (0.77 to 1.25) | |
Stage 3b | 197 | 1.17 (0.92 to 1.49) | 1.04 (0.80 to 1.36) | 1.03 (0.79 to 1.34) | |
Stages 4–5 | 104 | 1.50 (1.11 to 2.03) | 1.38 (1.01 to 1.90) | 1.34 (0.97 to 1.85) | |
HES only (N=4367) | At risk of CKD/stages 1–2 | 3456 | 1 | 1 | 1 |
Stage 3a | 557 | 0.14 (0.12 to 0.16) | 0.14 (0.12 to 0.17) | 0.14 (0.12 to 0.16) | |
Stage 3b | 224 | 0.08 (0.06 to 0.09) | 0.08 (0.07 to 0.10) | 0.08 (0.06 to 0.10) | |
Stages 4–5 | 130 | 0.11 (0.08 to 0.14) | 0.11 (0.09 to 0.15) | 0.12 (0.09 to 0.16) |
*Complete cases for adjusted model.
†Adjusted for sex, age at AMI admission, ethnicity (white, other), IMD quintile, clustering by participant.
‡Additionally adjusted for previous AMI, heart failure, COPD, diabetes mellitus.
AMI, acute myocardial infarction; CKD, chronic kidney disease; COPD, chronic obstructive pulmonary disease; HES, Hospital Episode Statistics; IMD, Index of Multiple Deprivation; MINAP, Myocardial Ischaemia National Audit Project; RRR, relative risk ratios.