Table 6 Hazard ratio (95% CI) of metabolic syndrome incidence across protein score and its components

Protein score

Median score

7.0

10.0

12.0

15.0

Follow up period

6.6

7.1

6.4

6.6

Model 1*

1.00 (Ref)

0.90 (0.75–1.09)

1.00 (0.83–1.20)

0.84 (0.68–1.05)

0.269

0.96 (0.89–1.02)

0.255

Model 2^†

1.00 (Ref)

0.88 (0.73–1.06)

0.97 (0.81–1.17)

0.75 (0.60–0.94)

0.041

0.93 (0.87–0.99)

0.040

Total protein (% of energy)

Median score

12.0

14.6

15.6

17.9

Follow up period

6.9

7.1

6.0

6.7

Model 1*

1.00 (Ref)

0.87 (0.72–1.06)

1.05 (0.87–1.27)

0.84 (0.68–1.02)

0.222

0.98 (0.91 − 1.05)

0.579

Model 2^†

1.00 (Ref)

0.94 (0.77–1.15)

1.08 (0.89–1.31)

0.82 (0.67–1.00)

0.115

0.97 (0.90 − 1.04)

0.427

Plant protein

Median score

5.8

7.1

8.1

9.7

Follow up period

6.9

6.5

6.4

6.8

Model 1*

1.00 (Ref)

1.07 (0.88–1.30)

1.02 (0.84–1.24)

0.91 (0.75–1.11)

0.309

0.96 (0.89 − 1.03)

0.316

Model 2^†

1.00 (Ref)

1.13 (0.93–1.37)

1.00 (0.82–1.22)

0.90 (0.74–1.11)

0.202

0.93 (0.87–1.00)

0.075

Model 3^‡

1.00 (Ref)

1.13 (0.93–1.38)

1.01 (0.83–1.23)

0.91 (0.73–1.12)

0.243

0.93 (0.86–1.00)

0.086

Animal protein

Median score

4.3

6.1

7.8

10.0

Follow up period

7.1

6.3

6.8

6.5

Model 1*

1.00 (Ref)

1.16 (0.96–1.41)

1.05 (0.86–1.28)

1.01 (0.82–1.23)

0.820

1.00 (0.93–1.08)

0.820

Model 2^†

1.00 (Ref)

1.18 (0.97–1.43)

1.09 (0.89–1.33)

1.08 (0.88–1.32)

0.642

1.01 (0.94 − 1.09)

0.606

Model 3^‡

1.00 (Ref)

1.16 (0.95–1.40)

1.05 (0.85–1.29)

1.02 (0.82–1.26)

0.882

0.99 (0.91–1.07)

0.865

PAR

Median score

0.63

0.95

1.30

2.0

Follow up period

5.8

6.7

6.6

7.0

Model 1*

1.00 (Ref)

1.14 (0.94–1.38)

1.01 (0.83 − 1.23)

0.99 (0.81–1.21)

0.602

0.96 (0.88–1.04)

0.340

Model 2^†

1.00 (Ref)

1.14 (0.94–1.38)

1.01 (0.83–1.24)

0.91 (0.74–1.12)

0.166

0.94 (0.86–1.03)

0.184