Table 5 Multivariable-adjusted odds ratio of the associations between dietary habits and metabolic syndrome

Meal frequency

<  3 meal/day

1

1

1

3 meal/day

1.048(0.791–1.387)

1.047(0.790–1.387)

1.030(0.775–1.370)

4–6 meal/day

0.995(0.768–1.289)

0.995(0.767–1.293)

0.979(0.752–1.274)

>  6 meal/day

1.296(0.886–1.895)

1.304(0.888–1.914)

1.267(0.859–1.871)

0.850

0.883

0.931

Fried-food consumption

<  1 time/month

1

1

1

1–3 time/month

0.928(0.750–1.147)

0.951(0.768–1.179)

1.008(0.810–1.255)

1–3 time/week

0.973(0.792–1.196)

0.998(0.810–1.229)

1.071(0.865–1.325)

Daily

0.902(0.708–1.150)

0.921(0.721–1.176)

0.999(0.779–1.281)

0.771

0.851

0.683

Adding salt to prepared meal

No

1

1

1

Sometimes

1.049(0.878–1.254)

1.057(0.884–1.264)

1.137(0.949–1.362)

Yes

1.011(0.865–1.180)

1.010(0.864–1.181)

1.098(0.937–1.286)

0.781

0.769

0.143

barbecued -food consumption

<  1 time/month

1

1

1

1–3 time/month

1.034(0.923–1.158)

1.063(0.946–1.194)

1.073(0.953–1.207)

>  3 time/month

1.185(1.015–1.383)

1.200(1.025–1.405)

1.190(1.014–1.396)

0.051

0.028

0.034

Used oil type

Solid oil

1

1

1

Semi solid oil

(Margarine)

0.923(0.739–1.154)

0.932(0.745–1.166)

0.914(0.727–1.149)

Liquid oil

1.033(0.859–1.241)

1.050(0.872–1.265)

0.981(0.811–1.186)

Frying oil

1.096(0.932–1.288)

1.111(0.943–1.309)

1.072(0.906–1.267)

0.268

0.206

0.418

Reuse oil number

none

1

1

1

once

1.077(0.939–1.235)

1.062(0.925–1.219)

1.083(0.941–1.247)

more than twice

1.051(0.761–1.451)

1.013(0.732–1.402)

1.007(0.721–1.405)

0.764

0.939

0.969