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Partial correlation (Pearson’s rho) between duration of plays and number of DMUs isolating the variable number of players.
| Duration of plays × Number of DMUs | P | r |
| U-10 | 0.000 | 0.706 |
| U-12 | 0.000 | 0.601 |
| U-14 | 0.000 | 0.754 |
r, correlation coefficient. DMUs, decision-making units.
