Table 2.

UVFI duration at the time of the EMG in months (mo)

Duration of the UVFI	No. of patients
≥ 1 months < 3 months	9/27 (33.3%)
≥ 3 months < 6 months	5/27 (18.5%)
≥ 6 months < 12 months	5/27 (18.5%)
≥ 12 months	7/27 (25.9%)
Unknown	1/27 (3.7%)