Table 2.
Five-year and extended follow-up outcomes in matched cohorts with and without iron deficiency anemia.
| Outcomes | IDAgroup (n = 160,928) | Control group (n = 160,928) | HR (95% CI) | p-value |
|---|---|---|---|---|
| 5-year follow-up | ||||
| TB infection, Events (IR/100,000 PY) | 108 (22) | 70 (14) | 1.48 (1.10–2.00) | 0.010 |
| Pneumonia, event (%) | 7,346 (4.6%) | 3,831 (2.4%) | 1.87 (1.79–1.94) | <0.001 |
| Reactive thrombocytosis event (%) | 495 (0.31%) | 131 (0.09%) | 3.68 (3.04–4.46) | <0.001 |
| 5–10 year follow-up | ||||
| TB infection, Events (IR/100,000 PY) | 21 (3) | 19 (3) | 1.17 (0.63–2.17) | 0.627 |
| Pneumonia event (%) | 1,545 (0.96%) | 1,024 (0.64%) | 1.60 (1.48–1.73) | <0.001 |
| Reactive thrombocytosis event (%) | 187 (0.12%) | 96 (0.06%) | 2.06 (1.61–2.63) | <0.001 |
TB, Tuberculosis; IDA, Iron deficiency anemia; HR, Hazard ratio; CI, Confidence interval; IR, Incidence rate; PY, Person-years.