Age distributions of the fire starters playing with cigarette lighters in two CPSC studies
| Age distribution (years) | 1985–87 | 1997–99 | Odds |
|---|---|---|---|
| Note: One incident with unknown age or lighter type was deleted from the 1997–99 study. The age adjusted odds ratio was derived by dividing the crude odds ratio by the population odds ratio. | |||
| *The odds ratio was statistically significant, z=−4.24, p<0.01. | |||
| 0–4 | 80 | 144 | 0.56 |
| ≥5 | 33 | 154 | 0.21 |
| % Ages 0–4 | 71 | 48 | |
| Crude odds ratio | 0.39 | ||
| Age adjusted odds ratio | 0.42* | ||
| 95% Confidence interval | 0.23 to 0.62 | ||