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Table 3 Study design, Outcome measures and results

From: Three year experience with the cochlear BAHA attract implant: a systematic review of the literature

Study Study Design Outcome measures Results (Mean improvement)
Baker 2015 [23] Retrospective case series Soundfield testing: PTA and SRT PTA: 41 dB HL
SRT: 56 dB HL
Gawecki 2016 [19] Prospective cohort study QoL questionnaires: GBI, APHAB, BAHU
Free field speech in noise audiometry
APHAB: 23.5 % improvement
GBI: 29.6 % improvement
BAHU: “Good” or “very good” by 85 % of patients
Speech in noise: 32.9 %
Deveze 2015 [6] Case report N/A N/A
Iseri 2014 [24], Iseri 2015 [9] Multicentre retrospective cohort study Free field PTA and SRT
QoL questionnaires: GBI
PTA: 27.3 dB HL
SRT: 24 dB HL
GBI: 40.5
Marsella 2015 [25] Prospective case series Free field PTA and SRT PTA: 25 dB HL
SRT: 63 %
Clamp 2015 [2]
Briggs 2015 [22]
Multicentre prospective cohort study Free field PTA and SRT
Speech in noise audiometry
QoL questionnaire: APHAB
PTA: 18.4 dB HL
SRT: 50 dB HL at 50 dB SPL
Speech in noise: 15 dB HL
APHAB: significant improvement p < 0.05
Powell 2015 [26] Cross-sectional cohort study Free field PTA and SRT
QoL questionnaires: Bone Anchored Hearing Devices questionnaire
PTA: 30.2
SRT: 72.5
Bone Anchored Hearing Devices Questionnaire: mean score 9.7/10
Carr 2015 [27] Retrospective cohort study Free field speech discrimination
QoL questionnaires: GBI, COSI
Speech discrimination: 56 % at 50 dBA
GBI:82 % and 91 % (for previously aided vs not-previously aided patients)
COSI: 86 % of patients could hear in background noise 95 % of the time
  1. APHAB Abbreviated Profile of Hearing Aid Benefit, BAHU BAHA Aesthetic, hygiene and Use, COSI Client Oriented Scale of Improvement, GBI Glasgow Benefit Inventory, N/A Not available, PTA Pure Tone Audiometry, QoL: Quality of Life, SRT Speech Reception Thresholds