Table 4.
Safety outcomes: N-acetylcysteine versus placebo.
| N | n | RR (95% CI) | P value | I2 | |
|---|---|---|---|---|---|
| Insomnia | 2 | 73 | 1.35 (0.32, 5.82) | 0.68 | 7% |
| Somnolence | 3 | 120 | 1.42 (0.72, 2.79) | 0.31 | 0% |
| Fatigue | 3 | 113 | 1.22 (0.43, 3.48) | 0.70 | 35% |
| Dizziness | 4 | 186 | 1.38 (0.70, 2.74) | 0.35 | 0% |
| Headache | 3 | 120 | 0.92 (0.44, 1.91) | 0.81 | 0% |
| Dry mouth | 3 | 146 | 0.95 (0.39, 2.34) | 0.91 | 0% |
| Nausea/vomiting | 7 | 323 | 1.15 (0.53, 2.50) | 0.72 | 46% |
| Diarrhea | 6 | 228 | 1.96 (0.78, 4.92) | 0.15 | 0% |
| Constipation | 4 | 186 | 0.88 (0.42, 1.84) | 0.74 | 0% |
| Rash | 3 | 84 | 2.90 (0.49, 17.29) | 0.24 | 0% |
95% CI 95% confidence interval, N number of studies, n number of patients, RR risk ratio.