Additional file 1: of Study protocol: a randomised controlled trial on the clinical effects of levothyroxine treatment for subclinical hypothyroidism in people aged 80 years and over Du PuyR. PostmusI. StottD. BlumM. PoortvlietR. Den ElzenW. PeetersR. van MunsterB. WolffenbuttelB. WestendorpR. KearneyP. FordI. KeanS. MessowC. WattT. JukemaJ. DekkersO. SmitJ. RodondiN. GusseklooJ. MooijaartS. 2018 Statistical analysis plan. (PDF 114 kb)