Table 1.
TMS parameter | Mean ± SDa | Intraclass correlation coefficient |
Coefficient of repeatability (SDC) |
|||||||
---|---|---|---|---|---|---|---|---|---|---|
Intraday |
Interday |
Interday averagedb |
Intraday | Interday | Interday averagedb | |||||
ICC(2,1)d | ICC (2,k)e | ICC (2,1)d | ICC (2,k)e | ICC (2,1)d | ICC (2,k)e | |||||
RMT0.2mV | 48.6 ± 6.7 | 0.935 | 0.966 | 0.678 | 0.808 | 0.811 | 0.895 | 5.5 | 11 | 8.5 |
TS1mV | 57.6 ± 9.4 | 0.915 | 0.955 | 0.725 | 0.841 | 0.750 | 0.857 | 10 | 14 | 15 |
A-SICI50 | 89 ± 14.2 | 0.123 | 0.218 | 0.144 | 0.252 | 0.286 | 0.444 | 58 | 62 | 42 |
A-SICI60 | 57.8 ± 19.6 | 0.287 | 0.446 | 0.511 | 0.676 | 0.394 | 0.565 | 69 | 59 | 49 |
A-SICI70 | 30.6 ± 18.2 | 0.371 | 0.541 | 0.373 | 0.543 | 0.513 | 0.678 | 52 | 55 | 40 |
A-SICI80 | 22.1 ± 11.1 | 0.329 | 0.496 | 0.424 | 0.595 | 0.541 | 0.702 | 32 | 29 | 24 |
A-SICI slope | 199.4 ± 49.4 | 0.173 | 0.295 | 0.511 | 0.676 | 0.449 | 0.620 | 179 | 152 | 120 |
peak A-SICI | 17.4 ± 9.8 | 0.423 | 0.595 | 0.510 | 0.675 | 0.576 | 0.731 | 28 | 28 | 20 |
T-SICI50 | 2.3 ± 4.7 | 0.414 | 0.586 | 0.529 | 0.700 | 0.582 | 0.736 | 15 | 9 | 9 |
T-SICI60 | 10.4 ± 13.0 5.7 (8.4)c |
0.924 | 0.961 | 0.883 | 0.938 | 0.925 | 0.961 | 10 | 12 | 10 |
T-SICI70 | 20.4 ± 15.9 | 0.923 | 0.96 | 0.615 | 0.761 | 0.651 | 0.789 | 14 | 27 | 28 |
T-SICI80 | 23.0 ± 14.6 | 0.809 | 0.895 | 0.608 | 0.756 | 0.858 | 0.923 | 22 | 25 | 16 |
T-SICI slope | 56.1 ± 39.1 | 0.88 | 0.936 | 0.827 | 0.905 | 0.870 | 0.930 | 43 | 42 | 40 |
peak T-SICI | 28.8 ± 17.7 | 0.871 | 0.931 | 0.816 | 0.899 | 0.893 | 0.944 | 20 | 20 | 16 |
Mean ± SD and coefficient of repeatability are expressed as % MSO for RMT0.2mV and TS1mV, % test MEP for A-SICI and % RMT0.2mV for T-SICI parameters; intraclass correlation coefficient (ICC) is a dimensionless measure. SD – standard deviation; SDC - smallest detectable change.
Averaged across four sessions.
Two subsequent measurements made on the same day averaged and used to calculate interday reliability.
Median (interquartile range).
Single measures.
Averaged measures.