Table 2 Overall knowledge of non-syndromic hearing loss (Domain 1)
From: Knowledge of genetics of hearing and genetic counseling among practicing audiologists
Non-syndromic hearing loss | Correct response N (%) | Incorrect response N (%) |
|---|---|---|
(1) What percentage of hearing loss is non-syndromic? (50%) | 31 (23.3%) | 102 6.7%) |
(2) In autosomal recessive inheritance, how many copies of an abnormal gene must be present for a trait to develop? (Two copies) | 93 (69.9%) | 40 (31.1%) |
(3) Select the most common gene mutation causing non-syndromic hearing loss. (GJB2) | 113 (85%) | 21 (15%) |
(4) Sporadic mutation can occur in children with? (Healthy parents) | 74 (55.6%) | 59 (44.4%) |
(5) Mutation in which gene causes auditory neuropathy? (OTOF) | 90 (67.7%) | 43 (32.3%) |
(6) The age of onset of non-syndromic hearing loss can be? (Both pre-lingual and post-lingual) | 111 (83.5%) | 22 (16.5%) |
(7) DFNA9 gene mutation causes? (Late-onset progressive sensorineural hearing loss | 89 (66.9%) | 44 (33.1%) |