Table 5 Hazard ratio (95% CI) of metabolic syndrome incidence across carbohydrate quality index score and its components

Carbohydrate quality index

Median score

10.0

12.0

14.0

16.0

Follow up period

6.1

6.2

6.9

6.8

Model 1*

1.00 (Ref)

0.97 (0.82–1.16)

0.84 (0.67–1.05)

0.87 (0.72–1.06)

0.100

0.93 (0.87–1.00)

0.065

Model 2^†

1.00 (Ref)

0.98 (0.82–1.17)

0.81 (0.64–1.01)

0.83 (0.69–1.00)

0.025

0.92 (0.85–0.98)

0.023

Glycemic index (per 1000Kcal)

Median score

18.0

23.6

29.9

41.1

Follow up period

6.5

6.8

6.8

6.9

Model 1*

1.00 (Ref)

1.09 (0.8–1.38)

1.09 (0.82–1.45)

0.98 (0.68–1.42)

0.571

1.00 (0.87–1.15)

0.926

Model 2^†

1.00 (Ref)

1.12 (0.88–1.41)

1.13 (0.84–1.51)

1.11 (0.76–1.61)

0.871

1.01 (0.89–1.16)

0.792

Model 3^‡

1.00 (Ref)

1.02 (0.80–1.31)

1.01 (0.73–1.36)

0.92 (0.61–1.38)

0.493

0.94 (0.81–1.10)

0.480

Fiber intake(g/1000Kcal)

Median score

12.5

16.6

20.2

26.7

Follow up period

6.3

7.0

6.4

7.0

Model 1*

1.00 (Ref)

0.91 (0.75–1.11)

0.92 (0.76–1.12)

0.91 (0.75–1.10)

0.309

0.89 (0.75–1.06)

0.209

Model 2^†

1.00 (Ref)

0.90 (0.74–1.09)

1.02 (0.84–1.24)

0.90 (0.74 − 1.09)

0.481

0.90 (0.76–1.07)

0.262

Model 3^‡

1.00 (Ref)

0.93 (0.76–1.13)

1.05 (0.86–1.29)

0.91 (0.75–1.11)

0.996

0.91 (0.77–1.08)

0.304

Whole grain/total grains

Median score

0.03

0.08

0.15

0.26

Follow up period

6.6

6.4

6.8

6.7

Model 1*

1.00 (Ref)

0.99 (0.81–1.20)

0.93 (0.77–1.13)

0.85 (0.69 − 1.04)

0.090

0.95 (0.88–1.02)

0.181

Model 2^†

1.00 (Ref)

0.94 (0.78–1.14)

0.92 (0.76 − 1.12)

0.77 (0.63 − 0.95)

0.016

0.94 (0.85–0.99)

0.036

Model 3^‡

1.00 (Ref)

0.92 (0.76–1.12)

0.89 (0.73–1.09)

0.75 (0.60–0.94)

0.012

0.91 (0.84–0.99)

0.033

SCHO/TCHO

Median score

0.31

0.40

0.50

0.67

Follow up period

6.6

6.4

7.1

6.2

Model 1*

1.00 (Ref)

1.25 (0.93–1.68)

1.11 (0.74–1.66)

1.19 (0.69–2.05)

0.851

1.01 (0.83–1.23)

0.858

Model 2^†

1.00 (Ref)

1.20 (0.89–1.61)

0.99 (0.66–1.49)

1.03 (0.60–1.79)

0.516

0.96 (0.79–1.16)

0.697

Model 3^‡

1.00 (Ref)

1.27 (0.90–1.63)

1.02 (0.68–1.53)

1.09 (0.63–1.88)

0.642

0.98 (0.81–1.20)

0.989