Table 1

Baseline characteristics of study participants

VariablePlanned invasive test
(n=116)
Usual care strategy
(n=64)
FFRCT-guided strategy
(n=52)
p Value
Demographics
 Age, years63.6±11.655.3±10.2<0.001
 Female sex25 (39.1)24 (46.2)0.41
 Racial/ethnic minority (self-reported)1 (1.6)1 (1.9)
Cardiac risk factors
 Hypertension45 (70.3)28 (53.8)0.07
 Diabetes12 (18.8)3 (5.8)0.04
 Dyslipidaemia15 (23.4)10 (19.2)0.58
 Current or past tobacco use33 (51.6)26 (50.0)0.51
 Pretest probability of obstructive CAD*54.5±17.144.6±16.10.002
Anginal type0.22
 Typical angina19 (29.7)17 (32.7)
 Atypical angina42 (65.6)35 (67.3)
 Non-cardiac chest pain3 (4.7)0 (0.0)
  • Data shown as mean±SD or number (percentage). *Pretest probability of obstructive CAD±SD calculated by the updated Diamond and Forrester score.18

  • CAD, coronary artery disease; FFRCT, fractional flow reserve estimated using CT.