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Positive and Negative Predictive Values* between the Parent Interview and Home Observation by Study Group and for the Total Sample
| Smoke Alarms | Intervention Group | Control Group | Fischer’s Exact Test | Total Sample |
|---|---|---|---|---|
| PPV | 10/31 (33%) | 21/39 (54%) | p=.09 | 31/70 (44%) |
| NPV | 5/22 (23%) | 4/6 (66%) | p=.06 | 9/28 (32%) |
| Poison Storage | ||||
| PPV | 6/37 (16%) | 4/28 (14%) | p=1.0 | 10/65 (15%) |
| NPV | 10/10 (100%) | 10/10 (100%) | p=1.0 | 20/20 (100%) |
PPV= # observed safe/#reported safe; NPV = #observed unsafe/#reported unsafe
