ACPA-status was evaluated using the commercial ELISA assay, the Axis-Shield DIASTAT anti-CCP2 test (Axis-Shield, Dundee, UK).
Plasma D-dimer values were assessed by the Nycomed NycoCard D-Dimer test (Axis-Shield PoC AS, Oslo, Norway) on citrated venous plasma.
Proprioceptive acuity was quantified as the distance along the testing axis corresponding to the middle 50th percentile range, i.e. the distance (in mm) between the 25% and 75% probabilities of reporting that their hand was to the right of the reference position (or forwards, in the case of forward-backward tests).
Here, one might assume that the distribution of attention is spread along each tested axis, with the form of attention changing across the three attention conditions.
Thus, while the timing of target presentations was the same across the attention conditions, it is possible that in the attend axis condition, when participants knew the direction in which the target would appear, they made eye movements along the tested axis prior to target onset on some trials, and this reduced their errors.
Flow speeds deviate by no more than 0.25% from the nominal value, whereas the flow velocity vector diverges no more than 0.5° from the test section axis.
We did not test for axis II or schizotypic features.
Kidney function was evaluated by the glomerular filtration rate following the Cockcroft Gault formula, 19 and by microalbumin in urine by NycoCard Microalbumin Single Test (Axis-Shield plc, Oslo, Norway).
ROC curve is a plot of sensitivity of test (Y-axis) against 1-specificity (X-axis).
Laboratory experiments were undertaken in Cardiff University's hydraulics laboratory, testing vertical axis turbines with rotors comprising smooth and rough blades.
