Table 3

Predictors of Distorted Waveforms

Distorted WaveformUnadjusted Odds Ratio (95% CI)p ValueAdjusted Odds Ratio (95% CI)p Value
PresentAbsent
Per patient (N = 655)n = 63n = 592
 Age, yrs63.966.10.98 (0.95–1.01)0.130.97 (0.94–1.00)0.06
 Body surface area, m21.861.910.49 (0.13–1.85)0.290.48 (0.10–2.35)0.36
 Female, %19.130.40.57 (0.28–1.15)0.120.46 (0.21–1.01)0.05
 Male, %80.969.61.00 (reference)1.00 (reference)
 5-F guiding catheter, %52.414.76.12 (3.24–11.53)<0.0016.30 (3.22–12.32)<0.001
 ≥6-F guiding catheter, %47.685.31.00 (reference)1.00 (reference)
 Right coronary artery, %14.318.80.76 (0.35–1.65)0.480.71 (0.32–1.57)0.40
 Left coronary artery, %85.781.21.00 (reference)1.00 (reference)
Per tracing (N = 3,995)n = 168n = 3,827
 FFR with contrast, %54.749.71.30 (0.86–1.97)0.211.33 (0.87–2.04)0.19
 FFR with IC adenosine, %7.941.80.12 (0.05–0.31)<0.0010.13 (0.05–0.33)<0.001
 FFR with IV adenosine, %37.634.50.93 (0.57–1.53)0.770.79 (0.47–1.31)0.36
 Resting Pd/Pa, %34.530.91.00 (reference)1.00 (reference)

Abbreviations as in Table 2.

  • Adjusted by all listed parameters in this table.

  • As in Table 2.