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. 2013 Aug 9;4:107. doi: 10.3389/fneur.2013.00107

Table 4.

Number of issues encountered during the IVR Digit Span Forward task.

Number of issues Frequency Percent
0.00 98 64.5
1.00 17 11.2
2.00 15 9.9
3.00 19 12.5
4.00 2 1.3
5.00 1 0.7
Total 152 100.0