Table 4.
Illustration of an Adaptive Test for Three Simulated Respondents (Nicotine Dependence Item Bank for Daily Smokers)
| Total no. items administered | Simulated respondent A (true T = 50.3) | Simulated respondent B (true T = 45.8) | Simulated respondent C (true T = 79.2) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Items administered | T | SE(T) | Next item | Items administered | T | SE(T) | Next item | Items administered | T | SE(T) | Next item | |
| 0 | 50.0 | 10.0 | 4 | 50.0 | 10.0 | 4 | 50.0 | 10.0 | 4 | |||
| 1 | 4 | 48.2 | 4.5 | 2 | 4 | 61.3 | 6.3 | 7 | 4 | 61.3 | 6.3 | 7 |
| 2 | 4,2 | 49.1 | 3.4 | 6 | 4,7 | 50.4 | 6.1 | 6 | 4,7 | 66.1 | 5.5 | 8 |
| 3 | 4,2,6 | 48.5 | 2.9 | None | 4,7,6 | 44.1 | 4.7 | 2 | 4,7,8 | 68.3 | 5.3 | 15 |
| 4 | 4,7,6,2 | 43.8 | 3.5 | 1 | 4,7,8,15 | 69.7 | 5.1 | 10 | ||||
| 5 | 4,7,6,2,1 | 45.2 | 3.1 | 3 | 4,7,8,15,10 | 68.6 | 4.2 | 18 | ||||
| 6 | 4,7,6,2,1,3 | 45.0 | 2.7 | None | 4,7,8,15,10,18 | 69.1 | 4.1 | 16 | ||||
| 7 | 4,7,8,15,10,18,16 | 67.7 | 3.6 | 19 | ||||||||
| 8 | 4,7,8,15,10,18,16,19 | 68.1 | 3.5 | 1 | ||||||||
| 9 | 4,7,8,15,10,18,16,19,1 | 68.4 | 3.5 | 24 | ||||||||
| 10 | 4,7,8,15,10,18,16,19,1,24 | 69.0 | 3.5 | None | ||||||||
| 27 | 1–27 (all items) | 51.0 | 1.6 | 1–27 (all items) | 44.6 | 1.6 | 1–27 (all items) | 71.8 | 3.2 | |||