In multivariate analysis of time to CHD death , Agatston scores of @-@ , @-@ , and greater than @ ( reference category @ ) were associated with hazard ratios of @ ( @ % confidence interval : @ , @ ) , @ ( @ % confidence interval : @ , @ ) , and @ ( @ % confidence interval : @ , @ ) , respectively ; hazard ratios for summed segmented vessel-specific scores of @-@ , @-@ , and @-@ ( reference category @ ) were @ ( @ % confidence interval : @ , @ ) , @ ( @ % confidence interval : @ , @ ) , and @ ( @ % confidence interval : @ , @ ) , respectively ; and hazard ratios for overall visual assessment of mild , moderate , or heavy ( reference category none ) were @ ( @ % confidence interval : @ , @ ) , @ ( @ % confidence interval : @ , @ ) , and @ ( @ % confidence interval : @ , @ ) , respectively .