Table 2 Event rates of the primary clinical outcomes (all-cause death, cardiovascular death, MI and ICA without revascularization)

From: Implementation of a national AI technology program on cardiovascular outcomes and the health system

 

90 days

1 year

2 years

    
 

FFR-CT unavailable

(n = 35,688)

FFR-CT available

(n = 54,865)

FFR-CT unavailable

(n = 35,667)

FFR-CT available

(n = 53,174)

FFR-CT unavailable

(n = 35,667)

FFR-CT available

(n = 53,174)

Unadjusted HR

(95% CI) α

P value

aHR

(95% CI) β

P value

All-cause mortality

209 (0.59)

303 (0.55)

613 (1.72)

869 (1.58)

1,134 (3.17)

1,612 (2.94)

0.923 (0.856–0.996)

0.04

1.00 (0.93–1.08)

0.97

Cardiovascular mortality

118 (0.33)

167 (0.30)

291 (0.82)

399 (0.73)

465 (1.30)

617 (1.12)

0.863 (0.765–0.973)

0.02

0.96 (0.85–1.08)

0.48

MIa

120 (0.34)

200 (0.37)

281 (0.79)

474 (0.86)

425 (1.19)

704 (1.28)

1.082 (0.959–1.220)

0.20

1.18 (1.05, 1.34)

0.006

Revascularization (PCI and CABG)

1,196 (3.36)

2,001 (3.66)

2,352 (6.59)

3,743 (6.82)

2,603 (7.29)

4,181 (7.62)

1.048 (0.998–1.100)

0.06

1.06 (1.01, 1.11)

0.02

 PCI

971 (2.73)

1,675 (3.06)

1,736 (4.89)

2,872 (5.26)

1,912 (5.35)

3,161 (5.76)

1.079 (1.019–1.142)

0.008

1.09 (1.03, 1.15)

0.002

 CABG

225 (0.63)

326 (0.60)

616 (1.74)

871 (1.59)

691 (1.94)

1,020 (1.86)

0.959 (0.870–1.056)

0.39

1.01 (0.91, 1.11)

0.89

All ICA performed

3,241 (9.1)

4,511 (8.2)

5,265 (14.8)

7,444 (13.6)

5,720 (16.0)

8,183 (14.9)

0.924 (0.893–0.956)

<0.001

0.93 (0.90, 0.97)

<0.001

ICA no revascularization

2,045 (5.7)

2,510 (4.6)

2,913 (8.2)

3,701 (6.7)

3,117 (8.7)

4,002 (7.3)

0.828 (0.790–0.868)

<0.001

0.84 (0.80, 0.88)

<0.001

Revascularization ratio

40.27

47.53

47.96

52.83

48.36

52.94

 

<0.001

  
  1. α Cox-proportional hazards for primary outcomes at 2 years; β covariates adjusted for baseline prognostic differences (age, heart failure, hypertension, valve disease, COPD and kidney disease).
  2. aDay 0 and day 1 events excluded.