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Table 1 Baseline characteristics of study participants stratified by quartiles of triglyceride glucose (TyG) index

From: Cumulative increased risk of incident type 2 diabetes mellitus with increasing triglyceride glucose index in normal-weight people: The Rural Chinese Cohort Study

Variables TyG index quartiles P trend
Quartile 1 (<8.16) n = 1423 Quartile 2 (8.16–8.47) n = 1422 Quartile 3 (8.48–8.81) n = 1429 Quartile 4 (≥8.82) n = 1424
Age (years) 44.00 (36.00–56.00) 51.00 (40.00–60.00) 52.00 (43.00–61.00) 54.00 (44.00–62.00) <0.001
Men 618 (43.43) 679 (47.75) 638 (44.65) 571 (40.10) 0.03
High school or above 156 (10.96) 180 (12.66) 140 (9.80) 121 (8.50) <0.01
Married/cohabiting 1274 (89.53) 1294 (91.06) 1306 (91.39) 1303 (91.50) 0.07
Smoking 436 (30.64) 495 (34.81) 456 (31.91) 411 (28.86) 0.14
Drinking 160 (11.24) 166 (11.67) 179 (12.53) 161 (11.31) 0.78
Physical activity
 Low 793 (55.73) 777 (54.64) 755 (52.83) 692 (48.60) <0.001
 Middle 282 (19.82) 279 (19.62) 290 (20.29) 321 (22.54)
 High 348 (24.46) 366 (25.74) 384 (26.87) 411 (28.86)
Family history of diabetesa 60 (5.24) 62 (5.36) 56 (4.83) 70 (6.03) 0.54
BMI (kg/m2) 21.53 (20.39–22.60) 21.57 (20.32–22.73) 21.94 (20.69–23.01) 22.35 (21.20–23.24) <0.001
WC (cm) 73.75 (70.25–78.00) 74.50 (70.75–78.75) 76.03 (71.93–80.50) 78.25 (74.10–82.15) <0.001
WHtR 0.46 (0.44–0.49) 0.47 (0.44–0.49) 0.48 (0.45–0.51) 0.49 (0.47–0.52) <0.001
FPG (mmol/l) 5.00 (4.71–5.31) 5.18 (4.86–5.48) 5.27 (4.98–5.62) 5.43 (5.14–5.81) <0.001
SBP (mmHg) 113.67 (105.33–126.00) 118.00 (108.00–130.67) 119.00 (109.33–131.67) 123.00 (112.33–136.67) <0.001
DBP (mmHg) 71.67 (66.33–78.33) 74.00 (68.00–81.00) 74.67 (69.00–81.67) 77.00 (70.00–84.00) <0.001
TC (mmol/l) 3.79 (3.38–4.27) 4.10 (3.65–4.64) 4.37 (3.85–4.96) 4.72 (4.09–5.28) <0.001
TG (mmol/l) 0.69 (0.59–0.78) 1.01 (0.92–1.10) 1.35 (1.23–1.48) 2.03 (1.78–2.56) <0.001
HDL-C (mmol/l) 1.25 (1.10–1.44) 1.21 (1.04–1.39) 1.17 (1.02–1.36) 1.10 (0.95–1.25) <0.001
LDL-C (mmol/l) 2.20 (1.90–2.60) 2.40 (2.00–2.90) 2.60 (2.10–3.10) 2.60 (2.10–3.10) <0.001
TyG index 7.93 (7.77–8.06) 8.33 (8.25–8.41) 8.64 (8.57–8.73) 9.08 (8.94–9.31) <0.001
  1. Significant P values (P < 0.05) are in italics
  2. Data are median (interquartile range) or no. (%)
  3. BMI body mass index, WC waist circumference, WHtR waist-to-height ratio, FPG fasting plasma glucose, SBP systolic blood pressure, DBP diastolic blood pressure, TC total cholesterol, TG triglyceride, HDL-C high-density lipoprotein cholesterol, LDL-C low-density lipoprotein cholesterol, TyG triglyceride glucose
  4. aPartial data deletion