Table 3.
Comparison of dietary and serum cholesterol levels by different educational groups
| Variables | Elementary school (n = 418) | Junior middle school (n = 925) | Senior middle school (n = 764) | College and above (n = 407) | P value |
|---|---|---|---|---|---|
| Dietary cholesterol, mg/d | 255.5 (160.3, 367.0) | 262.2 (176.5, 370.2) | 296.0 (207.8, 392.7) | 327.7 (212.8, 412.2) | 0.0001* |
| Egg intake, g/d | 39.6 (18.3, 59.5) | 35.8 (18.3, 59.0) | 48.4 (23.7, 60.4) | 52.8 (25.8, 60.9) | 0.0001* |
| TC, mmol/L | 4.61 (3.90, 5.20) | 4.51 (3.80, 5.28) | 4.53 (3.78, 5.20) | 4.62 (3.83, 5.30) | 0.518 |
| TG, mol/L | 1.40 (1.00, 1.90) | 1.48 (1.02, 2.05) | 1.49 (1.10, 2.15) | 1.45 (1.07, 2.10) | 0.0145* |
| HDL-C, mmol/L | 1.30 (1.10, 1.50) | 1.27 (1.10, 1.50) | 1.24 (1.09, 1.43) | 1.26 (1.10, 1.47) | 0.0413* |
| LDL-C, mmol/L | 2.80 (2.24, 3.30) | 2.76 (2.13, 3.30) | 2.76 (2.20, 3.39) | 2.86 (2.27, 3.44) | 0.0962 |
| Non-HDL-C, mmol/L | 3.29 (2.70, 3.83) | 3.22 (2.61, 3.85) | 3.25 (2.56, 3.88) | 3.26 (2.72, 3.95) | 0.5925 |
| LDL-C/HDL-C | 2.13 (1.72, 2.57) | 2.15 (1.67, 2.67) | 2.22 (1.73, 2.75) | 2.25 (1.75, 2.77) | 0.0089* |
Abbreviations: TC total cholesterol, HDL-C high-density lipoprotein cholesterol, LDL-C low-density lipoprotein cholesterol, TG triglycerides, Non-HDL-C non-high-density lipoprotein cholesterol
Elementary school: ≤6 years of education; Junior middle school: 7–9 years of education; Senior middle school: 10–12 years of education; College and above: at least college or university; ≥13 years of education)
∗P < 0.05