Table 2. Negative predictive values based on patient age and atherogenic risk factors for the prediction of calcium scoring≥800 or ≥400 prior to CTA based on the 732 ‘control phase’ patients.

	All patients	Patients with ≤2 risk factors	Patients with ≥3 risk factors	Male patients	Female patients
	Prediction of calcium scoring≥800
NPV>95%	73 yrs.	86 yrs.	66 yrs.	67 yrs.	88 yrs.
NPV>97%	67 yrs.	74 yrs.	62 yrs.	61 yrs.	79 yrs.
NPV>99%	50 yrs.	62 yrs.	49 yrs.	50 yrs.	63 yrs.
	Prediction of calcium scoring≥400
NPV>95%	55 yrs.	69 yrs.	48 yrs.	49 yrs.	68 yrs.
NPV>97%	50 yrs.	66 yrs.	45 yrs.	46 yrs.	55 yrs.
NPV>99%	45 yrs.	50 yrs.	45 yrs.	45 yrs.	51 yrs.

Numbers indicate patient's age (in yrs.), NPV indicates negative predictive value.