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Table 4 Threshold effect analysis of Se intake on T2DM using two-piecewise linear regression

From: Impact of age, sex, and thyroid autoimmunity on the association between selenium intake and type 2 diabetes mellitus

T2DM

OR (95%CI) p value

Male

Inflection point

6.5

 < 6.5

1.17 (0.72, 1.92) 0.5201

  > 6.5

2.73 (1.60, 4.64) 0.0002

Log likelihood ratio

0.030

Female

Inflection point

6.78

 < 6.78

1.59 (1.06, 2.40) 0.0266

  > 6.78

0.31 (0.09, 1.02) 0.0546

Log likelihood ratio

0.009

  1. Adjusted for age, race/ethnicity, education level, BMI, WC, 25OHD(D2 + D3), HDL-Cholesterol, LDL-cholesterol, triglyceride, total cholesterol, energy, fiber, total fat, vitamin D(D2 + D3), magnesium, iron, zinc, copper, smoking status, hypertension, CVD, thyroid autoimmunity