Table 4.
HRs (95% CI) of mild anemia group for total death stratified by current smoking, obesity, and age in men
| Variable | Category | Case/person-years | ID | aHR (95% CI) |
|---|---|---|---|---|
| Current smoking* | ||||
| Never or former smoker (n=3,248) | Normal group | 173/23,099.1 | 748.9 | 1.00 (reference) |
| Mild anemia group | 20/718.2 | 2,784.7 | 2.73 (1.62–4.61) | |
| Current smoker (n=1,386) | Normal group | 137/10,490.1 | 1,306.0 | 1.00 (reference) |
| Mild anemia group | 11/359.6 | 3,059.4 | 1.38 (0.72–2.67) | |
| Obesity | ||||
| Lean (BMI <25.0 kg/m2, n=3,109) | Normal group | 222/22,370.0 | 992.4 | 1.00 (reference) |
| Mild anemia group | 25/954.1 | 2,620.3 | 1.88 (1.17–3.00) | |
| Overweight or Obese (BMI ≥25.0 kg/m2, n=1,525) | Normal group | 88/11,219.3 | 784.4 | 1.00 (reference) |
| Mild anemia group | 6/123.7 | 4,851.5 | 3.97 (1.52–10.35) | |
| Age* | ||||
| Younger (≤63 y, n=2,574) | Normal group | 120/19,207.5 | 624.8 | 1.00 (reference) |
| Mild anemia group | 6/445.7 | 1,346.1 | 1.62 (0.68–3.85) | |
| Older (≥64 y, n=2,060) | Normal group | 190/14,381.7 | 1,321.1 | 1.00 (reference) |
| Mild anemia group | 25/632.0 | 3,955.5 | 2.26 (1.41–3.61) |
Adjusted for age, body mass index, smoking, hypertension medication, diabetes history, income, regular exercise (>30 min at least three times a weeks), fasting glucose, total cholesterol, Modification of Diet in Renal Disease-glomerular filtration rate, and C-reactive protein.
aHR, adjusted hazard ratio, CI, confidence interval; ID, incidence density (per 100,000 person-years); BMI, body mass index.
*
P-value for interaction <0.05.