Increased prevalence of risk factors among pregnant women in Tianjin from 1999 to 2010–2012.

<p>Data are reported in mean ± SD or number (%).</p><p>* Derived from Student’s t- test;</p><p>** Derived from Chi-square test or Fisher’s exact test.</p><p>Abbreviations: BMI, body mass index; BP, blood pressure; GCT, glucose challenge test.</p><p>† To make age between the 1999 study and the current study comparable, age was re-calculated as at pregnancy.</p><p>†† Due to difference in gestational age at GCT between the two studies, adjustment for gestational age at GCT was made for the comparison.</p><p>‡ Only habitual smoking during pregnancy was available in both the study in 1999 and the current study and therefore compared between the two periods.</p><p>Increased prevalence of risk factors among pregnant women in Tianjin from 1999 to 2010–2012.</p

Multivariable odds ratios of potential risk factors for gestational diabetes mellitus diagnosed by the IADPSG criteria.

<p>Variables adjusted in the multivariable analysis included the variables listed in the model.</p><p>Abbreviations: IADPSG, International Association of Diabetes and Pregnancy Study Group; BMI, body mass index; BP, blood pressure; GCT, glucose challenge test.</p><p>* P values and 95%CIs of ORs were adjusted for multiple comparisons by Ryan-Holm step-down Bonferroni procedure.</p><p>Multivariable odds ratios of potential risk factors for gestational diabetes mellitus diagnosed by the IADPSG criteria.</p

Prevalence of gestational diabetes diagnosed by the 1999 WHO criteria and the IADPSG criteria.

<p>Abbreviations: WHO, World Health Organization; IADPSG, International Association of Diabetes and Pregnancy Study Group; GCT, glucose challenge test; OGTT, oral glucose tolerance test.</p><p>* 40 women with GCT<7.8 mmol/L were referred to have OGTT because they had GCT before the 19th gestational week and meanwhile had a family history of diabetes.</p><p>† The total sample size of 17808 women was used as the denominator in calculation of the prevalence.</p><p>†† The total sample size of 18589 women was used as the denominator in calculation of the prevalence.</p><p>Prevalence of gestational diabetes diagnosed by the 1999 WHO criteria and the IADPSG criteria.</p

Clinical and biochemical characteristics of subjects stratified by gestational diabetes mellitus diagnosed by the IADPSG criteria.

<p>Abbreviations: IADPSG, International Association of Diabetes and Pregnancy Study Group; BMI, body mass index; BP, blood pressure; GCT, glucose challenge test.</p><p>Data are reported in mean ± SD or number (%).</p><p>* Derived from Student’s t- test</p><p>** Derived from Chi-square test or Fisher’s exact test.</p><p>† Defined as having continuously smoked one or more cigarettes per day for at least six months before pregnancy.</p><p>†† Defined as having smoked one or more cigarettes per day during pregnancy.</p><p>Clinical and biochemical characteristics of subjects stratified by gestational diabetes mellitus diagnosed by the IADPSG criteria.</p