Table 3.
Adjusted hazard ratios and 95% confidence interval for Hb or RBC by quintiles on outcomes.
| Hb | p for trenda | |||||
|---|---|---|---|---|---|---|
| Q1 | Q2 | Q3 | Q4 | Q5 | ||
| n = 85 | n = 73 | n = 85 | n = 76 | n = 72 | ||
| Median g/dl | 10.40 | 11.80 | 12.80 | 13.70 | 14.90 | |
| All-cause mortalityb | 5.64 (1.89–16.87) | 1.83 (0.55–6.14) | 1.44 (0.42–4.96) | 2.91 (0.93–9.09) | 1 (reference) | 0.001 |
| MACEc | 6.15 (2.33–16.2) | 2.86 (0.99–8.26) | 1.39 (0.44–4.39) | 3.28 (1.19–9.08) | 1 (reference) | 0.000 |
| RBC | p for trenda | |||||
| Q1 | Q2 | Q3 | Q4 | Q5 | ||
| n = 81 | n = 76 | n = 84 | n = 73 | n = 77 | ||
| Median ×1012/L | 3.45 | 3.89 | 4.23 | 4.52 | 4.96 | |
| All-cause mortalityb | 3.0 (1.26–7.17) | 1.48 (0.56–3.92) | 0.82 (0.30–2.28) | 1.00 (0.35–2.28) | 1 (reference) | 0.002 |
| MACEc | 2.70 (1.28–5.68) | 1.36 (0.58–3.22) | 0.77 (0.31–1.90) | 0.79 (0.31–2.01) | 1 (reference) | 0.001 |
HRs and 95% CIs were calculated by Cox proportional-hazards regression models using the forward conditional method.
HRs, hazard ratios; COPD, chronic obstructive pulmonary disease; LDL-C, low-density lipoprotein-cholesterol; Hb, hemoglobin; Q, quintiles; RBC, red blood cell; MACE, major adverse cardiovascular events (a composite of all-cause death, recurrent rupture, and secondary procedure).
p for trend was calculated by entering the median value of each category of Hb and RBC quintiles.
Adjusted for age, COPD, hematocrit, cystatin C, urea nitrogen, and LDL-C.
Adjusted for age, COPD, hematocrit, cystatin C, urea nitrogen, creatinine, total cholesterol, and LDL-C.