Table 9.
Paired t-test for Respiratory Rates Without Exposure to Piano Music
| Location | Mean | SD | SE |
|---|---|---|---|
| Preoperative Holding area | 19.28 | 1.03 | 0.11 |
| Operating room | 23.74 | 4.56 | 0.49 |
| Difference | −4.51 | −3.53 | −0.38 |
t = −9.05; df = 87
P < .0001
2-tailed
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