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Table 3 Demographic and clinical characteristics by the trajectory groups of CVD risk score

From: Trajectories of cardiovascular disease risk and their association with the incidence of cardiovascular events over 18 years of follow-up: The Tehran Lipid and Glucose study

Characteristics*

Low–Low

Medium–Medium

High–High

P†

No. of participants (%)

2740 (73.9)

792 (21.6)

167 (4.6)

Men, n (%)

943 (34.4)

517 (65.4)

128 (76.7)

 < .0001

Baseline

Age, mean ± SD, y

49.2 ± 6.5

63.5 ± 5.8

69.1 ± 6.2

 < .0001

Body mass index, kg/m2

28.2 ± 4.6

27.5 ± 4.3

27.6 ± 3.8

0.0002

Total cholesterol, mg/dL

223.7 ± 46.7

228.8 ± 45.9

229.8 ± 52.0

0.0110

LDL cholesterol, mg/dL

143.7 ± 38.6

148.4 ± 39.1

145.4 ± 36.5

0.0124

HDL cholesterol, mg/dL

42.6 ± 11.0

41.5 ± 10.8

39.4 ± 9.3

0.0001

Triglycerides, mg/dL, median (IQR)

165 (117–232)

177 (123–245)

179 (133–289)

0.0004

Lipid-lowering medication, n (%)

126 (4.6)

55 (7.0)

18 (10.8)

 < .0001

Systolic blood pressure, mm Hg

122.0 ± 17.6

137.3 ± 21.1

152.3 ± 25.9

 < .0001

Diastolic blood pressure, mm Hg

80.2 ± 10.7

81.8 ± 12.2

85.4 ± 13.4

 < .0001

Hypertension, n (%)

732 (26.7)

406 (51.3)

124 (74.3)

 < .0001

Anti-hypertensive medication, n (%)

218 (8.0)

158 (20.0)

58 (34.7)

 < .0001

Diabetes mellitus, n (%)

233 (8.5)

173 (21.9)

82 (49.1)

 < .0001

Anti-diabetic medication, n (%)

107 (3.9)

86 (10.9)

39 (23.4)

 < .0001

Current smoking, n (%)

318 (11.6)

123 (15.6)

23 (13.8)

0.012

CVD risk score, median (IQR)

0.02 (0.01–0.03)

0.09 (0.07–0.12)

0.20 (0.17–0.26)

0.0001

Follow up (Examination cycle four)

Age, mean ± SD, y

59.0 ± 6.4

73.0 ± 5.8

78.5 ± 5.7

 < .0001

Body mass index, kg/m2

29.5 ± 4.9

27.6 ± 4.3

27.6 ± 4.4

 < .0001

Total cholesterol, mg/dL

203.8 ± 43.1

196.2 ± 42.5

183.6 ± 40.2

 < .0001

LDL cholesterol, mg/dL

122.5 ± 36.2

119.1 ± 37.1

108.6 ± 35.1

0.0005

HDL cholesterol, mg/dL

48.3 ± 11.1

45.8 ± 10.7

42.7 ± 10.4

 < .0001

Triglycerides, mg/dL, median (IQR)

144 (105–200)

141 (105–191)

140.5 (103–209)

0.4479

Lipid-lowering medication, n (%)

402 (17.4)

114 (19.3)

24 (23.3)

0.044

Systolic blood pressure, mm Hg

124.8 ± 18.6

137.9 ± 22.0

153.0 ± 24.6

 < .0001

Diastolic blood pressure, mm Hg

79.7 ± 11.0

79.6 ± 12.6

82.3 ± 14.1

0.1166

Hypertension, n (%)

952 (41.1)

380 (63.9)

73 (83.0)

 < .0001

Anti-hypertensive medication, n (%)

557 (24.1)

232 (39.3)

47 (54.0)

 < .0001

Diabetes mellitus, n (%)

437 (18.9)

194 (32.8)

61 (69.3)

 < .0001

Anti-diabetic medication, n (%)

274 (11.9)

140 (23.7)

51 (58.0)

 < .0001

Current smoking, n (%)

191 (8.2)

59 (10.0)

6 (6.8)

0.370

CVD risk score, median (IQR)

0.03 (0.02–0.06)

0.17 (0.13–0.22)

0.38 (0.31–0.44)

0.0001

  1. HDL indicates high-density lipoprotein, LDL low-density lipoprotein
  2. *Numbers represent mean ± SD or median (IQR) for continuous variables; numbers and percentages are corresponding to "Yes" for dichotomous variables
  3. ANOVA or Kruskal–Wallis for continuous variables and chi-square for categorical variables