Estimated ratios of unlinked versus CA-level counts (diagnosis hierarchy approach) from 2000 to 2013, by CHD subtype, sex and age group
| Diagnosis | Sex | Age group | Ratio (CI) in 2000 | Ratio (CI) in 2013 | Trend coefficient (P value) | P values for tests comparing | |||
| Year | Year squared | Sex* | Age group* | Sex × age group | |||||
| STEMI† | F | 35–54 | 1.12 (1.09 to 1.15) | 1.14 (1.11 to 1.18) | 0.0174 (0.000) | −0.0012 (0.000) | |||
| F | 55–74 | 1.09 (1.06 to 1.11) | 1.11 (1.08 to 1.14) | 0.0174 (0.000) | −0.0012 (0.000) | ||||
| F | 75–84 | 1.05 (1.02 to 1.09) | 1.07 (1.02 to 1.13) | 0.0174 (0.000) | −0.0012 (0.000) | 0.946 | 0.000 | 0.945 | |
| M | 35–54 | 1.12 (1.10 to 1.15) | 1.15 (1.11 to 1.19) | 0.0174 (0.000) | −0.0012 (0.000) | ||||
| M | 55–74 | 1.08 (1.06 to 1.10) | 1.10 (1.08 to 1.13) | 0.0174 (0.000) | −0.0012 (0.000) | ||||
| M | 75–84 | 1.05 (1.03 to 1.08) | 1.08 (1.04 to 1.11) | 0.0174 (0.000) | −0.0012 (0.000) | ||||
| NSTEMI‡ | F | 35–54 | 1.10 (1.08 to 1.13) | 1.30 (1.27 to 1.33) | 0.0148 (0.000) | ||||
| F | 55–74 | 1.08 (1.06 to 1.10) | 1.27 (1.25 to 1.29) | 0.0148 (0.000) | |||||
| F | 75–84 | 1.04 (1.02 to 1.06) | 1.23 (1.21 to 1.25) | 0.0148 (0.000) | 0.768 | 0.000 | 0.734 | ||
| M | 35–54 | 1.12 (1.09 to 1.14) | 1.31 (1.29 to 1.33) | 0.0148 (0.000) | |||||
| M | 55–74 | 1.07 (1.06 to 1.09) | 1.27 (1.25 to 1.28) | 0.0148 (0.000) | |||||
| M | 75–84 | 1.03 (1.02 to 1.05) | 1.23 (1.21 to 1.24) | 0.0148 (0.000) | |||||
| Unstable angina‡ | F | 35–54 | 1.09 (1.07 to 1.10) | 1.15 (1.13 to 1.16) | 0.0047 (0.000) | ||||
| F | 55–74 | 1.09 (1.07 to 1.10) | 1.15 (1.14 to 1.16) | 0.0047 (0.000) | |||||
| F | 75–84 | 1.07 (1.06 to 1.09) | 1.14 (1.12 to 1.15) | 0.0047 (0.000) | 0.000 | 0.010 | 0.445 | ||
| M | 35–54 | 1.12 (1.10 to 1.13) | 1.18 (1.16 to 1.20) | 0.0047 (0.000) | |||||
| M | 55–74 | 1.10 (1.09 to 1.11) | 1.16 (1.15 to 1.17) | 0.0047 (0.000) | |||||
| M | 75–84 | 1.09 (1.08 to 1.11) | 1.15 (1.14 to 1.17) | 0.0047 (0.000) | |||||
| Stable angina‡ | F | 35–54 | 1.05 (1.04 to 1.06) | 1.07 (1.06 to 1.08) | 0.0015 (0.000) | ||||
| F | 55–74 | 1.03 (1.03 to 1.04) | 1.05 (1.05 to 1.06) | 0.0015 (0.000) | |||||
| F | 75–84 | 1.03 (1.03 to 1.04) | 1.05 (1.05 to 1.06) | 0.0015 (0.000) | 0.031 | 0.000 | 0.776 | ||
| M | 35–54 | 1.04 (1.04 to 1.05) | 1.06 (1.05 to 1.07) | 0.0015 (0.000) | |||||
| M | 55–74 | 1.03 (1.03 to 1.03) | 1.05 (1.04 to 1.05) | 0.0015 (0.000) | |||||
| M | 75–84 | 1.03 (1.02 to 1.04) | 1.05 (1.04 to 1.06) | 0.0015 (0.000) | |||||
| Other CHD‡ | F | 35–54 | 1.05 (1.03 to 1.07) | 1.06 (1.03 to 1.08) | 0.0003 (0.583) | ||||
| F | 55–74 | 1.03 (1.02 to 1.04) | 1.04 (1.03 to 1.05) | 0.0003 (0.583) | |||||
| F | 75–84 | 1.04 (1.03 to 1.06) | 1.05 (1.03 to 1.06) | 0.0003 (0.583) | 0.057 | 0.072 | 0.630 | ||
| M | 35–54 | 1.04 (1.03 to 1.05) | 1.04 (1.03 to 1.05) | 0.0003 (0.583) | |||||
| M | 55–74 | 1.03 (1.02 to 1.04) | 1.03 (1.03 to 1.04) | 0.0003 (0.583) | |||||
| M | 75–84 | 1.03 (1.02 to 1.04) | 1.04 (1.03 to 1.05) | 0.0003 (0.583) | |||||
*P values for sex and age group are from the respective models but without the age group × sex interaction term.
†From the model: ratio=constant + (admission year – 2000) + age group + sex + age group × sex + (admission year – 2000)2.
‡From the model: ratio=constant + (admission year – 2000) + age group + sex + age group × sex.
CA, contiguous admission; CHD, coronary heart disease; F, female; M, male;NSTEMI, non-STEMI; STEMI, ST elevation myocardial infarction.