| Randomization Arm |
Percentage of Patients with Appendicitis* |
Positive Predictive Value (%) |
Negative Predictive Value (%) |
|
| Female patients |
| Morphine |
40.2 (41) |
52.9 |
72.6 |
| Placebo |
27.2 (25) |
39.6 |
89.7 |
| Difference |
|
13.3 (-0.6, 27.2) |
-17.1
(-27.8, -6.4) |
| Male patients |
| Morphine |
57.5 (42) |
80.0 |
69.7 |
| Placebo |
64.4 (47) |
77.1 |
60.0 |
| Difference |
|
2.9 (-10.4, 16.2) |
9.7 (-5.7, 25.1) |
| All patients |
| Morphine |
47.4 (83) |
64.8 |
71.4 |
| Placebo |
43.6 (72) |
57.4 |
78.1 |
| Difference |
|
7.4 (-2.9, 17.7) |
-6.7 (-15.9, 2.5) |
|
| * Numbers in parentheses are numbers of patients. |
| Numbers in parentheses are 95% CIs. |
| P < .05 for difference between the morphine arm and placebo arm. |
|
