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. 2019 Dec 3;17(1):403.
doi: 10.1186/s12967-019-02156-3.

Triglyceride is an independent predictor of type 2 diabetes among middle-aged and older adults: a prospective study with 8-year follow-ups in two cohorts

Jing Zhao  1 , Yuan Zhang  1 , Fengjiang Wei  1 , Jiani Song  1 , Zhi Cao  2 , Chen Chen  3 , Kai Zhang  3 , Shuzhi Feng  4 , Yaogang Wang  5 , Wei-Dong Li  6
Affiliations

Triglyceride is an independent predictor of type 2 diabetes among middle-aged and older adults: a prospective study with 8-year follow-ups in two cohorts

Jing Zhao et al. J Transl Med. .

Abstract

Background: Although there is abundant evidence indicating the connection between triglyceride and type 2 diabetes mellitus (T2DM), few reports or cohort studies confirm that high TG concentration may predict the incidence of T2DM independently. Thus, we studied the association between triglyceride (TG) and T2DM in a male-dominated, middle and older aged cohort, Tianjin General Hospital Cohort. And we further verified our results in the China Health and Retirement Longitudinal Study (CHARLS).

Methods: We conducted an 8-year retrospective cohort study (2009-2017) with 7241 participants who were free from T2DM at baseline. Three groups were constructed based on baseline TG levels (normal, borderline-high, and high). We used a Cox proportional hazards model to evaluate the relationship between TG and T2DM after adjusting for possible risk factors. A Kaplan-Meier survival analysis was performed to compare the incidence of T2DM among subjects in each TG group. We also tested the association between TG and T2DM in the CHARLS cohort.

Results: In Tianjin General Hospital Cohort, 7241 participants (male 75.8%, female 24.2%) were included, mean age was 61.49 ± 13.85 years at baseline. The cumulative incidence of T2DM in our cohort study was 8.6% (9.2% in men and 6.6% in women). Compared with the normal TG group, the hazard ratios in the borderline and high group were 1.30 (95% CI 1.04-1.62) and 1.54 (95% CI 1.24-1.90). The Kaplan-Meier survival analysis indicated that higher TG levels may predict higher onset of T2DM. These results were verified in the CHARLS cohort, the hazard ratio with T2DM (95% CI) for logTG was 3.94 (2.64-5.87).

Conclusions: Our findings suggest that the TG level may be an independent risk factor and predictor for T2DM.

Keywords: Dynamic cohort study; Survival analysis; Triglyceride; Type 2 diabetes mellitus.

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Conflict of interest statement

The authors declare no competing interests.

Figures

Fig. 1
Fig. 1
Kaplan–Meier survival analysis K–M curves for T2DM among three TG levels. †Groups of TG were defined as follows: 1, < 150 mg/dL (normal); 2, 150 mg/dL-199 mg/dL (borderline high); 3, 200–499 mg/dL (high); *P-value < 0.01 for log-rank test
Fig. 2
Fig. 2
Adjusted hazard ratios (95% confidence intervals) for incidence of T2DM stratified by sex, age, hypertension, body mass index, estimated glomerular filtration rate (eGFR), and history of hypertension
See this image and copyright information in PMC

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