Age-specific differences in the association between prediabetes and cardiovascular diseases in China: A national cross-sectional study

Table 1 Characteristics of participants, n (%)

	Younger group	Older group	P value
Total	1751 (25.20)	5197 (74.80)
Men	744 (42.49)	3035 (58.40)	0.015
Smoking	402 (22.96)	2204 (42.41)	0.001
Alcohol drinking	412 (23.53)	2328 (44.80)	0.009
Regular physical activity	424 (24.21)	2385 (45.89)	< 0.001
Family history of CVD	277 (15.82)	1133 (21.80)	0.173
Antihypertensive drugs	81 (4.63)	346 (6.66)	0.155
Dyslipidemia	84 (4.80)	249 (4.79)	< 0.001
Lipid-lowering drugs	13 (0.74)	87 (1.67)	0.007
BMI (kg/m2, 95%CI)	25.0 (24.6-25.3)	24.9 (24.7-25.1)	0.688
WC (cm, 95%CI)	83.2 (82.0-84.4)	84.8 (84.2-85.3)	0.021
FPG (mmol/L, 95%CI)	5.6 (5.5-5.6)	5.5 (5.5-5.6)	0.586
PG2h (mmol/L, 95%CI)	8.2 (8.1-8.3)	8.6 (8.5-8.6)	< 0.001
TC (mmol/L, 95%CI)	4.8 (4.7-4.9)	5.0 (5.0-5.1)	< 0.001
TG (mmol/L, 95%CI)	1.9 (1.7-2.0)	1.9 (1.8-1.9)	0.985
HDL-c (mmol/L, 95%CI)	1.3 (1.2-1.3)	1.3 (1.3-1.3)	0.029
LDL-c (mmol/L, 95%CI)	2.7 (2.6-2.8)	2.9 (2.9-3.0)	< 0.001
SBP (mmHg, 95%CI)	120.0 (118.9-121.2)	131.9 (130.7-133.1)	< 0.001
DBP (mmHg, 95%CI)	79.1 (78.2-79.9)	81.2 (80.5-82.0)	< 0.001
Abnormal ECG (%)	366 (20.90)	2358 (45.37)	< 0.001
Prediabetes category
IFG (%)	357 (20.39)	1447 (27.84)	< 0.001
IGT (%)	1394 (79.61)	3750 (72.16)	< 0.001
CVD (%)	5 (0.29)	148 (2.85)	0.003

CVD: Cardiovascular disease; BMI: Body mass index; WC: Waist circumference; HR: Heart rate; FPG: Fasting plasma glucose; PG2h: 2 h post-load plasma glucose; TC: Total cholesterol; TG: Triglycerides; HDL-c: High-density lipoprotein-cholesterol; LDL-c: Low-density lipoprotein-cholesterol; SBP: Systolic blood pressure; DBP: Diastolic blood pressure; ECG: Electrocardiography; IFG: Impaired fasting glucose; IGT: Impaired glucose tolerance; 95%CI: 95% confidence interval.