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Table 3 Gender-specific percentages and means of baseline characteristics for right and left common carotid artery geometries

From: Bilateral common carotid artery ultrasound for prediction of incident strokes using intima-media thickness and external diameter: an observational study

  Mean±SD or n (%) for Mean±SD or n (%) for
RCCA Geometries defined by large* component(s): LCCA Geometries defined by large* component(s):
  IMT + IMT Diameter Neither IMT + IMT Diameter Neither
Diameter Only Only   Diameter Only Only  
Women N=1307 N=751 N=755 N=1294 N=1391 N=795 N=668 N=1253
Age, y 55.9±5.5 53.9±5.5 53.5±5.6 51.4±5.2 55.9±5.6 53.8±5.6 53.3±5.5 51.5±5.2
Race, black 507 (38.8) 226 (30.1) 224 (29.7) 262 (20.2) 507 (36.4) 197 (24.8) 246 (36.8) 269 (21.5)
CHD 43 (3.3) 13 (1.7)§ 8 (1.1) 7 (0.5) 41 (2.9) 11 (1.4) 11 (1.6)§ 8 (0.6)
Carotid lesions 554 (46.9) 227 (34.6) 193 (27.8)§ 279 (23.7) 548 (44.0) 241 (33.8) 178 (29.1) 286 (25.1)
Hypertension 634 (48.5) 199 (26.5) 252 (33.4) 236 (18.2) 659 (47.4) 207 (26.0) 229 (34.3) 226 (18.0)
Diabetes mellitus 202 (15.5) 64 (8.5) 50 (6.6)§ 58 (4.5) 194 (13.9) 67 (8.4) 56 (8.4) 57 (4.5)
Current smoker 357 (27.3) 164 (21.8) 230 (30.5) 319 (24.7) 391 (28.1)§ 194 (24.4) 191 (28.6)§ 294 (23.5)
Current drink 596 (45.6) 394 (52.5) 381 (50.5) 794 (61.4) 654 (47.0) 436 (54.8) 334 (50.0) 741 (59.1)
Systolic BP mm Hg 128±22 116±16 121±19 112±16 128±22 116±15 121±19 113±16
Diastolic BP mm Hg 73±12 71±10§ 72±11 70±10 73±12 71±10§ 73±11 70±10
Height, cm 163.0±5.9 162.0±6.0 163±6.0§ 162.3±5.7 162.9±6.0 161.9±5.8 163.1±5.9 162.3±5.8
BMI, kg/m2 28.0±5.7 26.5±5.0 27.3±5.8 25.5±4.7 27.8±5.6 26.5±5.1 27.5±5.9 25.5±4.7
Glucose, IU 6.32±2.94 5.76±1.92 5.69±1.65§ 5.51±1.27 6.21±2.76 5.80±1.90 5.80±2.05 5.49±1.28
HDL, IU 1.46±0.43 1.55±0.45 1.50±0.47 1.57±0.45 1.45±0.44 1.54±0.45 1.54±0.47 1.57±0.43
LDL, IU 3.65±1.05 3.56±1.05 3.41±1.06 3.27±1.03 3.65±1.06 3.54±1.04 3.39±1.10§ 3.27±0.99
Fibrinogen, mg/dL 314±71 298±56 308±64 293±57 315±69 299±61§ 303±62 293±57
WBC, 1000s/mm3 6.00±1.86 5.72±1.76 6.01±1.92 5.86±1.79 6.00±1.88 5.94±1.81 5.89±1.87 5.80±1.77
Triglyceride, IU 1.35±0.67 1.28±0.65 1.27±0.63 1.18±0.60 1.35±0.67 1.29±0.64 1.24±0.64§ 1.18±0.59
Prevalent stroke 37 (2.8) 11 (1.5) 20 (2.6) 25 (1.9) 32 (2.3) 10 (1.3) 28 (4.2) 23 (1.8)
MEN N=1068 N=599 N=598 N=1065 N=1074 N=607 N=599 N=1050
Age, y 56.5±5.5 55.1±5.6 53.7±5.8 52.4±5.4 56.4±5.5 54.6±5.6 53.9±5.7 52.6±5.5
Race, black 311 (29.1) 171 (28.5) 131 (21.9) 218 (20.5) 294 (27.4) 147 (24.2) 160 (26.7)§ 230 (21.9)
CHD 100 (9.4) 59 (9.8) 38 (6.4) 56 (5.3) 111 (10.3) 58 (9.6) 36 (6.0) 48 (4.6)
Carotid lesions 551 (58.7) 264 (50.8) 231 (43.3) 324 (34.1) 546 (57.9) 275 (52.0) 216 (40.5) 333 (35.5)
Hypertension 466 (43.6) 174 (29.0) 214 (35.8) 235 (22.1) 470 (43.8) 184 (30.3) 208 (34.7) 227 (21.6)
Diabetes mellitus 153 (14.3) 76 (12.7) 56 (9.4)§ 67 (6.3) 152 (14.2) 75 (12.4) 61 (10.2) 64 (6.1)
Current smoker 344 (32.2) 156 (26.0) 207 (34.6) 263 (24.7) 361 (33.6) 157 (25.9) 187 (31.2)§ 265 (25.2)
Current drink 667 (62.5) 389 (64.9) 408 (68.2) 705 (66.2) 672 (62.6)§ 395 (65.1) 398 (66.4) 704 (67.0)
Systolic BP, mm Hg 129±20 119±16 123±19 116±14 128±21 120±16 124±19 116±14
Diastolic BP, mmHg 77±13 74±11 76±12§ 74±10 76±13 75±11 76±12 74±10
Height, cm 176.6±6.4§ 175.7±6.5 177.5±6.4 176.0±6.3 176.6±6.4 175.5±6.3 177.7±6.4 175.8±6.4
BMI, kg/m2 27.6±4.1 26.7±3.8§ 26.9±3.9 26.3±3.5 27.5±4.0 26.8±3.7§ 27.0±3.9 26.4±3.6
Glucose, IU 6.28±2.39 6.21±2.34 5.92±1.66§ 5.74±1.09 6.25±2.34 6.16±2.20 5.98±1.77§ 5.75±1.23
HDL, IU 1.17±0.37 1.16±0.34 1.21±0.43§ 1.16±0.34 1.17±0.37 1.13±0.32 1.22±0.45§ 1.17±0.34
LDL, IU 3.65±0.95§ 3.71±0.97 3.48±0.96 3.54±0.94 3.65±0.98 3.70±0.95 3.52±0.96 3.53±0.92
Fibrinogen, mg/dL 305±67 294±62§ 295±61§ 287±62 303±66 294±63§ 298±64 287±61
WBC, 1000s/mm3 6.38±1.98 6.03±1.82 6.34±2.07§ 6.07±1.83 6.47±2.06 6.19±1.98 6.07±1.83 6.04±1.79
Triglyceride, IU 1.49±0.75§ 1.45±0.74 1.47±0.78 1.40±0.72 1.51±0.78 1.49±0.76 1.43±0.72 1.37±0.72
Prevalent stroke 26 (2.4) 13 (2.2) 12 (2.0) 17 (1.6)) 21 (2.0) 15 (2.5) 13 (2.2) 19 (1.8)
  1. N= the maximum number possible; some variables have lower numbers available. Fewer persons had carotid plaque information.
  2. *Large is defined as ≥ the gender- and side-specific medians for IMT and external diameter in Table 1.
  3. Where omnibus tests are significant, post hoc comparisons are made to the neither large IMT nor large diameter group using the Student’s t test and Chi Square test. P-values <0.0005, <0.005, § 0.05.