Subgroup analyses of the association between time-dependent TSH tertiles with all-cause mortality adjusted for expanded case-mix+laboratory covariates. Expanded case-mix+laboratory analyses adjusted for age, sex, race, ethnicity, diabetes, dialysis vintage, vascular access, body mass index, and serum albumin level. TSH tertiles 1, 2, and 3 correspond to TSH levels of <1.28, 1.28 to <2.14, and 2.14 to 86.7 mIU/L, respectively. AVF, arteriovenous fistula; AVG, arteriovenous graft.