Table 1.

System Reproducibility. Reproducibility between First and Second Recording—24‐Hour Reproducibility.

	Mean ± SD 1	Mean ± SD 2	CR	%CR	P
PWD	133.9 ± 7.4	134.3 ± 7.7	4.3	3.2	0.842
P30	20.5 ± 7.2	19.8 ± 7.2	7.5	37.4	0.171
P60	3.0 ± 1.5	3.0 ± 1.3	1.4	45.9	0.897
RMS30	4.3 ± 2.2	4.4 ± 2.1	1.0	22.9	0.423

Mean and standard deviation is shown for first (1) and 24 recording (2) in normal subjects. No significant difference is found between recordings for each variable measured by paired t‐test (P=). The coefficient or reproducibility (CR) is expressed as a percentage (%CR). See text for details.