Table 3.
Incidence of Adverse Events and Patient Satisfaction Scores
| Variables | Low-Dose (n=70) | Control (n=70) | P value |
|---|---|---|---|
| Patients with nausea | |||
| 1–4 h after operation | 6 (8.6) | 6 (8.6) | >0.999 |
| 4–24 h after operation | 4 (5.7) | 14 (20.0) | 0.021 |
| 24–48 h after operation | 2 (2.9) | 17 (24.3) | <0.001 |
| 48–72 h after operation | 0 (0) | 10 (14.3) | 0.001 |
| Patients with vomiting | |||
| 1–4 h after operation | 2 (2.9) | 3 (4.3) | >0.999 |
| 4–24 h after operation | 1 (1.4) | 8 (11.4) | 0.033 |
| 24–48 h after operation | 1 (1.4) | 10 (14.3) | 0.009 |
| 48–72 h after operation | 0 (0) | 5 (7.1) | 0.058 |
| Patients with dizziness | 4 (5.7) | 5 (7.1) | >0.999 |
| Respiratory rate, times/mina | 13.54 ± 1.47 | 13.50 ± 1.42 | 0.861 |
| Patient satisfaction scoreb | 4.79 ± 0.41 | 3.80 ± 0.73 | <0.001 |
Note: Data are expressed as mean ± standard deviation or no. (%). Bold indicates P<0.05. aUsed to assess the risk of respiratory depression. bPatient satisfaction score: 5, very satisfied; 4, satisfied; 3, not sure; 2, unsatisfied; 1, very unsatisfied.