| PHPMI-positive (n = 26) | PHPMI-negative (n = 26) | p Value | |
| Age (years) | 9.1 (2.5) | 9.4 (2.2) | * |
| Males | 9 (34.6%) | 9 (34.6%) | * |
| Body mass index (kg/m2) | 20.6 (3.5) | 20.1 (2.8) | * |
| Weight (kg) | 38.5 (13.5) | 38.6 (11.0) | 0.939 |
| Height (m) | 1.35 (0.17) | 1.37 (0.14) | 0.171 |
| Body surface area (m2) | 1.18 (0.28) | 1.20 (0.23) | 0.490 |
| Systolic blood pressure (mm Hg) | 104 (12.7) | 105 (11.3) | 0.933 |
| Diastolic blood pressure (mm Hg) | 61.0 (7.8) | 62.7 (7.8) | 0.437 |
| Pulse pressure (mm Hg) | 43.4 (12.9) | 41.9 (10.7) | 0.648 |
| Total cholesterol (mg/dl) | 173 (26.8) | 163 (25.4) | 0.200 |
| HDL-cholesterol (mg/dl) | 52.6 (15.0) | 52.1 (15.2) | 0.896 |
| LDL-cholesterol (mg/dl) | 103 (23.6) | 92.9 (21.5) | 0.136 |
| Triglycerides (mg/dl) | 82.4 (37.0) | 79.7 (30.7) | 0.874 |
| Lp(a) (mg/dl) | 23.4 (31.5) | 21.2 (32.1) | 0.358 |
| Apo A-I (mg/dl) | 149 (24.0) | 151 (27.6) | 0.830 |
| Apo-B (mg/dl) | 85.5 (19.8) | 74.6 (14.5) | 0.023 |
Paired Student t tests. Data are mean (SD), unless otherwise specified. *Matched by design.
p Values for triglycerides and Lp(a) are for log-transformed values.
Apo, apolipoprotein; HDL, high-density lipoprotein; LDL, low-density lipoprotein; Lp(a), lipoprotein(a); PHPMI-negative, negative parental history of premature myocardial infarction; PHPMI-positive, positive parental history of premature myocardial infarction.