highly significantP < 0.001
The mean hearing loss for all frequencies at the start of the study was 29.2 ± 21.1 dB HL and increased to 35.3 ± 18.9 dB HL after 6 months, a highly significant difference ( P < 0.001).
The mean hearing loss for all frequencies at the start of the study was 29.2 ± 21.1 dB HL and increased to 35.3 ± 18.9 dB HL after 6 months, a highly significant difference ( P < 0.001).