Table 2.
The means ± standard deviations of lead and lag.
| Controls | COPD | P | |
|---|---|---|---|
| Lead (ms) | 48 ± 59 | 123 ± 107 | <0.0001 |
| Lag (ms) | 147 ± 124 | 269 ± 249 | <0.0001 |
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