Table 2 The Cox regression analysis the association between the niacin intake and mortality of the population with MetS.

All-cause mortality

Quartile1

1

1

1

Quartile2

0.78(0.65, 0.95)*

0.015

0.79(0.66, 0.95)*

0.012

0.85(0.70, 1.02)

0.076

Quartile3

0.69(0.57, 0.84)**

< 0.001

0.67(0.55, 0.81)**

< 0.001

0.76(0.62, 0.94)*

0.010

Quartile4

0.49(0.38, 0.62)**

< 0.001

0.59(0.47, 0.74)**

< 0.001

0.68(0.54, 0.87)*

0.002

CVD mortality

Quartile1

1

1

1

Quartile2

0.68(0.50, 0.91)*

0.011

0.70(0.53, 0.93)*

0.013

0.75(0.53, 0.93)*

0.013

Quartile3

0.61(0.44, 0.85)*

0.004

0.62(0.45, 0.85)*

0.003

0.71(0.45, 0.85)*

0.003

Quartile4

0.41(0.28, 0.61)**

< 0.001

0.55(0.39, 0.78)**

< 0.001

0.63(0.39, 0.78)**

< 0.001