Table 3.

Univariate analysis on patient base and vessel base for prediction of false positive CT-FFR.

CACS: coronary artery calcium score.

Variable	OR	95%CI	p value
The patient-based univariate analysis
Age	1.00	0.94–1.08	0.81
Male	0.66	0.18–2.39	0.53
Body mass index	1.33	1.06–1.67	0.01
Diabetes mellitus	3.36	0.82–13.81	0.08
Hypertension	3.55	0.71–17.81	0.09
Dyslipidemia	0.88	0.20–3.77	0.86
Current smoking	0.76	0.15–4.00	0.74
Mean heart rate	0.98	0.87–1.12	0.79
CACS 3groups
CACS≦100 (reference)	1.00	1.00	N/A
100 < CACS≦400	3.69	0.59–22.94	0.16
CACS>400	4.50	0.81–25.15	0.09
Image noise	1.18	1.01–1.40	0.04
Left ventricular mass	0.99	0.98–1.01	0.37
Left ventricular mass index	0.97	0.94–1.01	017
The vessel-based univariate analysis
Calcified plaque	5.16	1.06–20.85	0.01
Vessel CACS 3groups
vCACS≦50 (reference)	1.00	1.00	N/A
50 < vCACS≦100	8.00	0.81–79.02	0.08
vCACS>100	6.28	0.73–54.48	0.10
Positive remodeling	0.23	0.03–1.94	0.11
Bifurcation	0.56	0.15–2.05	0.37
Coronary tree
RCA + LCX (reference)	1.00	1.00	N/A
LAD	0.86	0.25–3.02	0.82