Table 1 Demographic and Risk Factor Profiles in the Derivation and Validation Sets
From: A model to predict unstable carotid plaques in population with high risk of stroke
Variable | Derivation Set (n = 1894) | Validation Set (n = 947) | P |
|---|---|---|---|
Sex (male) | 874 (46.1%) | 451 (47.6%) | 0.457 |
Mean age (years) | 60.7 ± 8.6 | 60.4 ± 8.7 | 0.321 |
Education level (Primary school or below) | 730 (38.5%) | 402 (42.4%) | 0.045 |
Marriage (married) | 1330 (70.2%) | 699 (73.8%) | 0.102 |
Atrial fibrillation | 130 (6.9%) | 57 (6.0%) | 0.392 |
Diabetes mellitus | 457 (24.1%) | 251 (26.5%) | 0.168 |
Hypertension | 1503 (79.4%) | 743 (78.5%) | 0.579 |
Hypercholesterolemia | 741 (39.1%) | 349 (36.9%) | 0.241 |
Overweight or obesity | 847 (44.7%) | 408 (43.1%) | 0.408 |
Smoking | 634 (33.5%) | 339 (35.8%) | 0.219 |
Lack of Physical activity | 1443 (76.2%) | 727 (76.8%) | 0.731 |
Family history of strok | 602 (31.8%) | 282 (29.8%) | 0.276 |
FPG (mmol/L) | 6.1 ± 1.8 | 6.2 ± 2.0 | 0.079 |
HbA1c (%) | 6.6 ± 2.5 | 6.6 ± 1.9 | 0.872 |
Hcy (mmol/L) | 12.2 ± 7.5 | 12.0 ± 6.6 | 0.611 |
TC (mmol/L) | 5.1 ± 1.0 | 5.1 ± 1.0 | 0.386 |
LDL-C (mmol/L) | 3.0 ± 0.8 | 3.0 ± 0.8 | 0.944 |
HDL-C (mmol/L) | 1.6 ± 0.8 | 1.5 ± 0.7 | 0.600 |
TG (mmol/L) | 1.7 ± 1.3 | 1.7 ± 1.4 | 0.699 |
Carotid plaque | 660 (34.8%) | 340 (35.9%) | 0.579 |
Carotid instability plaque | 174 (9.2%) | 92 (9.7%) | 0.649 |