Table 10.
ORs (95% CI) for metabolic syndrome and its components according to the quartiles of nonheme iron intake (mg/day) among women in the SDHS 2012–2013.
| Quartiles of Dietary Iron Intake, ORs (95% CI) | |||||
|---|---|---|---|---|---|
| Q1 | Q2 | Q3 | Q4 | p-Value for Trend 1 | |
| Nonheme Iron Intake (mg/day) | <10.69 | (10.69–13.76) | (13.76–18.24) | ≥18.24 | |
| n | 418 | 418 | 416 | 417 | |
| Metabolic syndrome | |||||
| Crude model | Reference | 0.87(0.64,1.21) | 1.25(0.92,1.70) | 0.92(0.67,1.27) | 0.111 |
| Adjusted model 2 | Reference | 1.01(0.71,1.44) | 1.42(0.99,2.03) | 1.14(0.74,1.75) | 0.150 |
| Metabolic syndrome components | |||||
| Elevated blood pressure | |||||
| Crude model | Reference | 0.93(0.73,1.18) | 1.17(0.92,1.49) | 0.93(0.73,1.19) | 0.214 |
| Adjusted model 2 | Reference | 1.10(0.81,1.49) | 1.42(1.03,1.94) * | 1.15(0.80,1.66) | 0.140 |
| Elevated waist circumference | |||||
| Crude model | Reference | 0.90(0.70,1.15) | 1.00(0.78,1.28) ** | 0.90(0.70,1.15) | 0.689 |
| Adjusted model 2 | Reference | 0.99(0.75,1.30) | 1.08(0.81,1.44) | 1.05(0.74,1.47) | 0.918 |
| Elevated fasting glucose | |||||
| Crude model | Reference | 0.96(0.71,1.31) | 1.29(0.97,1.73) | 1.16(0.86,1.56) | 0.181 |
| Adjusted model 2 | Reference | 1.09(0.78,1.51) | 1.40(1.00,1.95) * | 1.29(0.87,1.91) | 0.215 |
| Elevated triglycerides | |||||
| Crude model | Reference | 0.92(0.68,1.23) | 1.24(0.94,1.64) | 1.02(0.76,1.35) | 0.194 |
| Adjusted model 2 | Reference | 0.94(0.68,1.28) | 1.26(0.92,1.72) | 1.06(0.73,1.54) | 0.243 |
| Reduced HDL-C | |||||
| Crude model | Reference | 1.19(0.87,1.62) | 1.16(0.85,1.58) | 1.07(0.78,1.47) | 0.685 |
| Adjusted model 2 | Reference | 1.30(0.93,1.81) | 1.28(0.91,1.80) | 1.23(0.82,1.85) | 0.421 |
* p < 0.05, ** p < 0.001. 1 The p-value for the trend was examined using medians in each quartile of dietary iron intake. 2 The models were adjusted for age, income, physical activity level, intentional physical exercise, smoking status, alcohol use, and dietary total energy intake.