Table 4

Estimated ratios of CA versus 28-day episode-level counts (diagnosis hierarchy approach) from 2000 to 2013, by CHD subtype, sex and age group

DiagnosisSexAge groupRatio (CI) in
2000
Ratio (CI) in
2013
Trend coefficient (P value)P values for tests comparing
YearYear squaredSex*Age group*Sex × age group
STEMI†F35–541.10 (1.05 to 1.14)1.01 (0.99 to 1.03)−0.0064 (0.000)
F55–741.08 (1.06 to 1.09)1.01 (1.00 to 1.02)−0.0064 (0.000)
F75–841.05 (1.03 to 1.06)1.03 (1.02 to 1.05)−0.0064 (0.000)0.9460.0000.799
M35–541.09 (1.06 to 1.11)1.01 (0.98 to 1.03)−0.0064 (0.000)
M55–741.08 (1.07 to 1.09)1.01 (1.00 to 1.02)−0.0064 (0.000)
M75–841.05 (1.04 to 1.06)1.04 (1.02 to 1.06)−0.0064 (0.000)
NSTEMI‡F35–541.10 (1.06 to 1.14)1.05 (1.03 to 1.08)−0.0036 (0.000)
F55–741.07 (1.06 to 1.09)1.03 (1.01 to 1.04)−0.0036 (0.000)
F75–841.08 (1.06 to 1.10)1.04 (1.02 to 1.05)−0.0036 (0.000)0.4700.9370.033
M35–541.08 (1.06 to 1.10)1.03 (1.02 to 1.05)−0.0036 (0.000)
M55–741.10 (1.08 to 1.12)1.05 (1.04 to 1.07)−0.0036 (0.000)
M75–841.09 (1.07 to 1.11)1.04 (1.03 to 1.06)−0.0036 (0.000)
Unstable angina§F35–541.15 (1.13 to 1.17)1.09 (1.07 to 1.10)−0.0124 (0.000)0.0006 (0.001)
F55–741.15 (1.14 to 1.17)1.09 (1.08 to 1.10)−0.0124 (0.000)0.0006 (0.001)
F75–841.17 (1.15 to 1.19)1.11 (1.09 to 1.12)−0.0124 (0.000)0.0006 (0.001)0.0000.0400.017
M35–541.18 (1.16 to 1.20)1.12 (1.10 to 1.14)−0.0124 (0.000)0.0006 (0.001)
M55–741.21 (1.19 to 1.22)1.15 (1.13 to 1.16)−0.0124 (0.000)0.0006 (0.001)
M75–841.20 (1.18 to 1.21)1.13 (1.12 to 1.15)−0.0124 (0.000)0.0006 (0.001)
Stable angina§F35–541.14 (1.12 to 1.16)1.08 (1.07 to 1.10)−0.0115 (0.000)0.0006 (0.004)
F55–741.15 (1.14 to 1.17)1.10 (1.09 to 1.11)−0.0115 (0.000)0.0006 (0.004)
F75–841.14 (1.12 to 1.16)1.08 (1.07 to 1.10)−0.0115 (0.000)0.0006 (0.004)0.0000.0090.097
M35–541.20 (1.18 to 1.23)1.15 (1.13 to 1.16)−0.0115 (0.000)0.0006 (0.004)
M55–741.20 (1.18 to 1.22)1.14 (1.13 to 1.15)−0.0115 (0.000)0.0006 (0.004)
M75–841.18 (1.16 to 1.20)1.13 (1.11 to 1.14)−0.0115 (0.000)0.0006 (0.004)
Other CHD§F35–541.18 (1.15 to 1.22)1.11 (1.08 to 1.14)−0.0211 (0.000)0.0012 (0.000)
F55–741.19 (1.16 to 1.22)1.12 (1.10 to 1.14)−0.0211 (0.000)0.0012 (0.000)
F75–841.19 (1.16 to 1.21)1.11 (1.09 to 1.13)−0.0211 (0.000)0.0012 (0.000)0.0000.3590.542
M35–541.22 (1.20 to 1.25)1.15 (1.13 to 1.17)−0.0211 (0.000)0.0012 (0.000)
M55–741.23 (1.20 to 1.25)1.15 (1.14 to 1.17)−0.0211 (0.000)0.0012 (0.000)
M75–841.21 (1.19 to 1.24)1.14 (1.12 to 1.15)−0.0211 (0.000)0.0012 (0.000)
  • *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 + age × (admission year – 2000).

  • ‡From the model: ratio=constant + (admission year – 2000) + age group + sex + age group × sex.

  • §From the model: ratio=constant + (admission year – 2000) + age group + sex + age group × sex + (admission year – 2000)2.

  • CA, contiguous admission; CHD, coronary heart disease; F, female; M, male; NSTEMI, non-STEMI; STEMI, ST elevation myocardial infarction.