Elevated triglyceride-glucose index predicts poor third-trimester glycemic control among gestational diabetes mellitus women: A prospective study in Shanghai

Table 3 Factors associated with the rate of good plasma glucose control among women with gestational diabetes mellitus (n = 1118)

Variables	LRa1		LRb2		LRc3
	OR (95%CI)	P value	OR (95%CI)	P value	OR (95%CI)	P value
Daily PE time group (minute/day)
< 30	1.00		1.00		1.00
30-59	1.03 (0.89-1.19)	0.70	1.02 (0.88-1.17)	0.83	1.02 (0.89-1.18)	0.74
60-89	1.07 (0.92-1.23)	0.39	1.04 (0.90-1.19)	0.59	1.05 (0.91-1.20)	0.51
90-119	1.08 (0.93-1.25)	0.33	1.05 (0.91-1.22)	0.48	1.06 (0.92-1.23)	0.42
≥ 120	1.27 (1.07-1.51)	< 0.01	1.25 (1.06-1.48)	0.01	1.25 (1.06-1.47)	0.01
Age group (years)
< 35	1.00		1.00
≥ 35	0.94 (0.87-1.01)	0.09	0.94 (0.86-1.01)	0.10
Education
Primary/Junior high	1.00		1.00		1.00
Senior high	1.01 (0.92-1.11)	0.87	0.98 (0.90-1.08)	0.73	0.99 (0.90-1.08)	0.79
College and above	1.15 (1.07-1.24)	< 0.01	1.10 (1.00-1.21)	0.04	1.11 (1.03-1.19)	< 0.01
Monthly income (RMB)
≤ 5000	1.00		1.00
5001-10000	1.10 (1.02-1.18)	0.01	1.04 (0.96-1.13)	0.36
> 10000	1.15 (1.06-1.25)	< 0.01	1.05 (0.94-1.16)	0.39
Residency status
Local resident	1.00		1.00
Non-local resident	0.98 (0.92-1.04)	0.52	1.01 (0.95-1.08)	0.78
Pre-pregnancy BMI (kg/m2)
< 24 (low/normal weight)	1.00		1.00		1.00
≥ 24 (overweight/obesity)	0.84 (0.79-0.89)	< 0.01	0.89 (0.83-0.94)	< 0.01	0.88 (0.83-0.94)	< 0.01
Balanced diet with suggestion
Yes	1.00		1.00
No	0.98 (0.92-1.04)	0.45	0.99 (0.94-1.06)	0.87
Pregnant status
Primipara	1.00		1.00
Multipara	0.98 (0.92-1.04)	0.46	1.03 (0.97-1.09)	0.37
TyG index	0.73 (0.67-0.78)	< 0.01	0.76 (0.70-0.82)	< 0.01	0.76 (0.70-0.82)	< 0.01

¹LRa indicates univariate logistic regression model to explore the influence of variables on the rate of good plasma glucose control among women with gestational diabetes mellitus (GDM).

²LRb indicates multivariate logistic regression model to explore the influence of variables on the rate of good plasma glucose control among GDM women with the inclusion of all variables.

³LRc indicates multivariate logistic regression model adjusted for the influence of daily physical exercise time, education, pre-pregnancy body mass index, and triglyceride-glucose index on the rate of good plasma glucose control among GDM women.

OR: Odds ratio; PE: Physical exercise; BMI: Body mass index; TyG: Triglyceride-glucose.