Table 2. Serum/plasma concentrations of homocysteine, folate, vitamin B12, cholesterol, LDL-cholesterol, HDL-cholesterol, triglycerides and blood Pb by quartiles of ratio of sTfR to ferritin in Pakistani patients with premature AMI.
Characteristics* | Q1 | Q2 | Q3 | Q4 | p value** |
Homocysteine, µmol/L | 23.9±20.7/18.2(9.7) | 22.0±14.5/18.2(10) | 24.2±18.4/19.4(8.3) | 23.0±15.8/18.4(402) | 0.41 |
Folate, ng/mL | 7.45±3.83/6.39(5.34) | 6.48±3.56/5.62(4.17) | 6.23±3.42/5.1(4.5) | 7.50±4.02/6.84(5.04) | 0.03 |
Vitamin B12, pg/mL | 315±159/294(219) | 324±181/300(255) | 352±193/334(200) | 372±203/334(248) | 0.11 |
Cholesterol, mg/dL | 155±39/152(64) | 169±45/164(51) | 166±40/168(52) | 157±41/156(52) | 0.026 |
LDL-cholesterol, mg/dL | 98.3±35.1/91.0(55.1) | 108.0±39.7/105.0(51.0) | 104.6±35.2/105.2(47.9) | 97.2±35.3/93.0(46.3) | 0.11 |
HDL-cholesterol, mg/dL | 30.2±8.4/29.0(12.0) | 32.9±13.6/32.0(12.0) | 33.9±10.4/34.5(11.3) | 35.7±10.3/36.0(15.8) | 0.004 |
Triglycerides, mg/dL | 126.7±62.4/115(73.0) | 158.7±95.4/129.0(89.0) | 148.6±80.7/132.0(86.0) | 126.1±66.5/111.0(69.0) | 0.004 |
Blood Pb, µg/dL | 16.8±8.6/13.7(11.9) | 15.1±6.6/14.0(7.5) | 14.5±6.4/13.5(8.8) | 14.9±7.6/13.0(8.4) | 0.14 |
Values are means±SD/median (IQR).
p value was based on ANOVA comparing means of quartiles; however, Kruskal-Wallis nonparametric test was applied for comparing the distributions for homocysteine,
sTfR = soluble transferrin receptor.