Table 4

Mortality Risk Ratios by Anemia Status at Baseline and Follow-Up

Subgroup 1 ComparisonSubgroup 2 ComparisonShort-Term Follow-Up Risk Ratio (95% CI)Chi-SquareLong-Term Follow-Up Risk Ratio (95% CI)Chi-Square
Persistent anemiaNo anemia at baseline and follow-up1.68 (1.37–2.06)23.42.51 (1.99–3.14)54.4
Persistent anemiaNo anemia at baseline1.61 (1.32–1.96)20.82.19 (1.75–2.71)41.8
Persistent anemiaResolved anemia1.73 (1.03–3.14)4.42.43 (1.74–3.48)27.6
Persistent anemiaIncident anemia1.30 (0.98–1.75)3.21.33 (1.01–1.76)4.0
Incident anemiaNo anemia at baseline and follow-up1.29 (0.99–1.68)3.51.89 (1.48–2.38)25.0
Incident anemiaResolved anemia1.35 (0.78–2.49)1.11.82 (1.29–2.61)11.8§
Resolved anemiaNo anemia at baseline and follow-up0.98 (0.54–1.61)0.10.98 (0.73–1.36)0.1
Resolved anemiaNo anemia at baseline0.93 (0.52–1.53)0.10.90 (0.65–1.20)0.5

CI = confidence interval.

  • p < 0.0001.

  • p < 0.05.

  • p > 0.05.

  • § p < 0.001.