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Distribution of MD progression rates.
| Tertiary (AGC) | Community (COGS) | |
|---|---|---|
| MD progression dB/yr | −0.3 (−0.7 to 0.0) | −0.1 (−0.4 to 0.1) |
| Range | −6.3 to 1.1 | −2.1 to 1.3 |
| −0.5 < x ≤ −0.1 | 134/362 (37.0%) | 141/210 (67.1%) |
| −1 < x ≤ −0.5 | 78/362 (21.5%) | 27/210 (12.9%) |
| −2 < x ≤ −1 | 40/362 (11.0%) | 12/210 (5.7%) |
| −3 < x ≤ −2 | 7/362 (1.9%) | 1/210 (0.5%) |
| −4 < x ≤ −3 | 1/362 (0.3%) | 0/210 (0%) |
| x ≤ −4 | 4/362 (1.1%) | 0/210 (0%) |
