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Table 2 Proportion of the effect of birth weight on T2DM, fasting glucose, fasting insulin and two-hour glucose mediated by cardiometabolic factors

From: Association of birth weight with type 2 diabetes mellitus and the mediating role of fatty acids traits: a two-step mendelian randomization study

Exposure

β1(SE)

Mediator

β2(SE)

Outcome

β0(SE)

Mediation proportion

Birth weight

0.107 (0.026)

PUFA/MUFA ratio

−0.819 (0.246)

T2DM

−1.113 (0.235)

7.9% (1.1%,14.7%)

0.095 (0.025)

PUFA/TFA ratio

−0.846 (0.254)

7.2% (0.8%,13.7%)

0.106 (0.028)

Omega-6/TFA ratio

−0.850 (0.255)

8.1% (0.9%,15.2%)

0.082 (0.025)

LA/TFA ratio

−0.807 (0.261)

6.0% (0.2%,11.7%)

Birth weight

0.107 (0.026)

PUFA/MUFA ratio

−0.079 (0.022)

Fasting glucose

−0.061 (0.015)

13.8% (1.8%,25.9%)

0.095 (0.025)

PUFA/TFA ratio

−0.083 (0.022)

12.8% (1.6%,24.1%)

0.106 (0.028)

Omega-6/TFA ratio

−0.081 (0.022)

13.9% (1.7%,26.2%)

0.082 (0.025)

LA/TFA ratio

−0.078 (0.022)

10.5% (0.5%,20.5%)

Birth weight

0.107 (0.026)

PUFA/MUFA ratio

−0.069 (0.021)

Fasting insulin

−0.080 (0.014)

9.3% (1.4%,17.2%)

0.095 (0.025)

PUFA/TFA ratio

−0.068 (0.021)

8.1% (1.0%,15.2%)

0.106 (0.028)

Omega-6/TFA ratio

−0.074 (0.021)

9.8% (1.7%,17.9%)

0.082 (0.025)

LA/TFA ratio

−0.074 (0.021)

7.6% (0.8%,14.4%)

Birth weight

0.107 (0.026)

PUFA/MUFA ratio

−0.304 (0.063)

Two-hour glucose

−0.250 (0.056)

13.0% (3.0%,23.0%)

0.095 (0.025)

PUFA/TFA ratio

−0.269 (0.064)

10.2% (1.8%,18.7%)

0.106 (0.028)

Omega-6/TFA ratio

−0.245 (0.063)

10.4% (1.6%,19.1%)

0.082 (0.025)

LA/TFA ratio

−0.239 (0.062)

7.9% (0.7%,15.0%)

  1. Abbreviations LA/TFA ratio, ratio of linoleic acid to total fatty acids; Omega-6/TFA ratio, ratio of omega-6 fatty acids to total fatty acids; PUFA/MUFA ratio, ratio of polyunsaturated fatty acids to monounsaturated fatty acids; PUFA/TFA ratio, ratio of polyunsaturated fatty acids to total fatty acids