Snik et al. 2001 Unaided and aided Europe pure tone audiometry, overall benefit from VSB unaided and aided IV III-3 63 adults 7 months treatment, but subpopulation sound-field speech Retrospective, with no benefit remains testing in noise and multicenter study quite Most of patients benefit from Aided and unaided Snik et al. 2001 VSB treatment but subgroup warble tone Netherlands IV III-2 14 adults 7 months presented with low gain thresholds, Speech recognition tests Prospective significant improvement, high Unaided and aided, Sterkers 2003 France level of satisfaction with the pre and post surgery VSB pure tone thresholds, Sound Field Warble tone to determine functional gain, IV III-2 125 adults 4 years Speech intelligibility in Retrospective survey quiet, Subjective outcomes using the GBI and a Vibrant benefit not validated questionnaire no significant difference Sziklai et al. 2011 Hungary Warble tone functional III III-2 7 adults not stated gain, Speech recognition scores Self control prospective study
Snik et al. 2001 Europe IV III-3 63 adults 7 months Unaided and aided pure tone audiometry, unaided and aided sound-field speech testing in noise and quite overall benefit from VSB treatment, but subpopulation with no benefit remains Retrospective, multicenter study Snik et al. 2001 Netherlands IV III-2 14 adults 7 months Aided and unaided warble tone thresholds, Speech recognition tests Most of patients benefit from VSB treatment but subgroup presented with low gain Prospective Sterkers 2003 France IV III-2 125 adults 4 years Unaided and aided, pre and post surgery pure tone thresholds, Sound Field Warble tone to determine functional gain, Speech intelligibility in quiet, Subjective outcomes using the GBI and a Vibrant benefit not validated questionnaire significant improvement, high level of satisfaction with the VSB Retrospective survey Sziklai et al. 2011 Hungary III III-2 7 adults not stated Warble tone functional gain, Speech recognition scores no significant difference Self control prospective study
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