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Table 4 Threshold effects of ca concentration on GDM and FPG

From: A prospective study of early pregnancy metal concentrations and gestational diabetes mellitus based on a birth cohort in Northwest China

 

GDM

FPG

Outcome

Adjusted RR (95%CI) a, P

Adjusted β (95%CI) a, P

Model I

  

 One line slope

0.36 (0.19, 0.69), 0.002

-0.01 (-0.14, 0.12), 0.880

Model II

  

 Turning point (K)

0.46

0.41

 <Kb slope 1

0.08 (0.02, 0.31), < 0.001

-0.56 (-0.99, -0.12), 0.012

 ≥Kb slope 2

1.01 (0.36, 2.86), 0.978

0.13 (-0.04, 0.30), 0.136

LRT test c

0.014

0.010

  1. a Adjusted for maternal age, education, BMI before pregnancy, first pregnancy, history of and smoking or passive smoking, and other four metals
  2. b Ln Ca as a continuous variable in the two group respectively
  3. cP < 0.05, indicates that Model II is significant different from Model I
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BMC Pregnancy and Childbirth

ISSN: 1471-2393

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