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Comparison between mean amplitudes (in mm) of the two age groups among males, females and overall (we can see that a relatively constant ratio between the mean amplitudes is being maintained among the two age groups).
| Amplitudes (mm) | Young | Old | Ratio of means | p-value |
|---|---|---|---|---|
| Males | 14.49±3.55 | 8.39±2.65 | 1.727 | 0.043 |
| Females | 6.28±2.46 | 3.65±1.46 | 1.722 | 0.037 |
| Overall | 10.39±5.13 | 6.02±3.20 | 1.726 | 0.001 |
