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. 2018 Aug 7;10:241. doi: 10.3389/fnagi.2018.00241

Figure 1.

Figure 1

Distribution of mean bone conduction threshold as a function of age in age-related hearing impairment (ARHI) cases and healthy controls, generated using GraphPad Prism 5.0. Means of the right and left ear hearing thresholds at 500, 1000, 2000 and 4000 Hz for bone conduction in patients were plotted as a function against subjects’ age ranging from 50 to 75 years. Hearing loss thresholds are expressed in decibels (dB). Linear regression equation and line were added for each data series of cases and controls.