TNFRSF1A and chronic kidney disease: Age modified the association between TNFR1 and the kidney outcome, such that those with age < median of 74 years had a stronger association between TNFR1 and CKD (adjusted HR 2.0, 95% CI 1.9–4.6) than those with age ≥ 74 years (adjusted HR 1.8, 95% CI 1.0–3.3; p for comparison 0.01).