Table 4 The influence of age on the EF/Sm(avg) correlation and Sm(avg) velocity
Age/years (n=308) | 20–40 (n=75) | 41–60 (n=123) | 61–80 (n=110) | Significance |
|---|---|---|---|---|
Pearson’s correlation | Pearson’s correlation | Pearson’s correlation | ||
EF/Sm(avg) | r=0.978 (p=0.002) | r=0.934 (p=0.044) | r=0.889 (p=0.02) | P=0.625 |
Sm(avg) | 11.2±0.1 (cm/s) | 9.6±0.1 (cm/s) | 8.6±0.1 (cm/s) | P<0.0001 |
EF (%, mean ±SD) | 67±2 | 64±2 | 62±2 | P<0.0001 |