Table 3. The Risk of Cardiovascular Mortality According to Quintiles of Myeloperoxidase Levels and Smoking Status.

	Serum Myeloperoxidase Levels
Smoking Status	Quint1	Quint2	Quint3	Quint4	Quint5	P for trend*
Sustained quitters	1.42% (1)	0.96% (0.75)	1.09% (0.84)	0.79% (0.59)	1.06% (0.88)	0.7690
Intermittent quitters	1.33% (1)	1.39% (1.14)	0.83% (0.59)	0.80% (0.67)	1.67% (1.28)	0.9622
Continuing smokers	1.89% (1)	1.59% (0.91)	2.55% (1.35)	2.15% (1.26)	3.49% (2.09)	0.0396

Data presented as % of quintile column total (hazard ratio relative to quintile 1 adjusted for age, sex, race and body mass index).

^*adjusted for age and sex and race and body mass index.