Role of DFNB1 mutations in hereditary hearing loss among assortative mating hearing impaired families from South India.

Deaf marrying deaf is an increasing trend with sign language being the preferred mode of communication.

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We observed that the chi-square value, which compares the differences between the observed and the expected values across the three groups, to be 58.21, with a p - value < 0.001, which is highly significant (Table 16 ).

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