Table 3.
Odds ratios (95% CI) for the prevalence of hypertension according to the quartile groups of serum ferritin levels in each daytime workers and shift workers
| Odds ratio (95% confidence intervals) | ||||
|---|---|---|---|---|
| Variables | Daytime workers | Shift workers | ||
| Unadjusted | Adjusteda | Unadjusted | Adjusteda | |
| Quartiles of ferritin (ng/mL) | ||||
| Quartile 1 (≤ 66.82) | Ref. | Ref. | Ref. | Ref. |
| Quartile 2 (66.83–100.78) | 1.037 (0.811–1.327) | 1.125 (0.853–1.484) | 1.168 (0.690–1.976) | 1.364 (0.738–2.518) |
| Quartile 3 (100.79–149.13) | 1.127 (0.865–1.469) | 1.274 (0.959–1.691) | 0.958 (0.571–1.608) | 1.088 (0.582–2.031) |
| Quartile 4 (> 149.13) | 1.297 (1.015–1.657) | 1.372 (1.027–1.833) | 1.726 (1.015–2.935) | 2.009 (1.042–3.873) |
FBS fasting blood sugar, TC total cholesterol, TIBC total iron-binding capacity, BMI body mass index
aAdjusted for age, FBS, TC, TIBC, BMI, alcohol intake and smoking status