Negative predictive value (NPV) of self reported safety practices
| Intervention | Control | |||
|---|---|---|---|---|
| Reported unsafe* | NPV (%) | Reported unsafe* | NPV (%) | |
| *Number reported unsafe behavior in follow up questionnaire. | ||||
| Any working smoke alarm | 3 | 100 | 2 | 100 |
| Working alarm each level | 20 | 85 | 11 | 91 |
| Stair gate | 36 | 83 | 28 | 86 |
| Syrup of ipecac | 28 | 96 | 8 | 88 |