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| Metric | MCB (N = 48) | Control (N = 40) | Effect Size (Cohen’s d) | |--------|--------------|------------------|--------------------------| | Planning Time (mean ± SD) | 342 ± 85 min | 468 ± 112 min | 1.34 (large) | | Task Completion Ratio | 0.89 ± 0.07 | 0.73 ± 0.12 | 1.56 | | Coordination Score (1‑5) | 4.3 ± 0.4 | 3.0 ± 0.6 | 2.33 | | Privacy Satisfaction (1‑5) | 4.6 ± 0.3 | 3.2 ± 0.5 | 2.86 | | SUS (out of 100) | 86.2 ± 7.4 | 71.5 ± 10.1 | 1.65 |