Table 4.
Age-stratified analysis of tuberculosis and related outcomes in patients with iron deficiency anemia.
| 5-year follow-up | 18–50 yr. (n = 55,302) | >51 (n = 98,313) | P for interaction | ||
|---|---|---|---|---|---|
| HR (95% CI) | p-values | HR (95% CI) | p-values | ||
| 5-year follow-up | |||||
| New-onset TB infection | 2.42 (1.31–4.49) | 0.004 | 1.47 (1.02–2.12) | 0.036 | 0.268 |
| Pneumonia | 1.48 (1.32–1.67) | <0.001 | 1.98 (1.90–2.07) | <0.001 | <0.001 |
| Reactive thrombocytosis | 4.11 (2.98–5.69) | <0.001 | 3.17 (2.50–4.03) | <0.001 | 0.262 |
| 5-10-year follow-up | |||||
| New-onset TB infection | NA | NA | 1.80 (0.86–3.77) | 0.117 | NA |
| Pneumonia | 1.45 (1.15–1.81) | 0.001 | 1.63 (1.49–1.77) | <0.001 | 0.325 |
| Reactive thrombocytosis | 2.66 (1.72–4.13) | <0.001 | 1.71 (1.24–2.36) | 0.001 | 0.161 |
TB, Tuberculosis; HR, Hazard ratio; CI, Confidence interval; p for interaction indicates statistical significance of effect modification by age. NA, not available; based on the outcome terms, the patient count was too small for detailed results to be displayed.