Table 4 Distribution of risk categories and "observed" (i.e. empirical) risk within them, based on the multivariable logistic models of the 1- and 2-year risk of becoming a daily smoker, NDIT 1999-2005.
From: A prognostic tool to identify adolescents at high risk of becoming daily smokers
1-year risk analysis | 2-year risk analysis | |||
|---|---|---|---|---|
Risk category | % of the sample | "Observed" risk | % of the sample | "Observed" risk |
0% but ≤2% | 56.7 | 0.6% | 14.8 | 1.3% |
>2% but ≤5% | 12.9 | 4.3% | 35.8 | 2.4% |
>5% but ≤10% | 12.7 | 7.3% | 15.2 | 9.5% |
>10 but ≤20% | 7.1 | 13.6% | 13.9 | 15.9% |
>20% | 10.6 | 32.0% | 20.2 | 38.7% |