| Adult | Adolescent1 | College | Treatment/Prison | |
|---|---|---|---|---|
| Level 3 Lifetime | 1.92
(1.52-2.33) | 3.38
(1.79-4.98) | 5.56
(3.54-7.59) | 15.44
(11.58-19.31) |
| Level 2 Lifetime | 4.15
(3.11-5.18) | 8.40
(5.61-11.18) | 10.88
(4.86-16.89) | 17.29
(11.05-23.53) |
| Level 1 Lifetime | 93.92
(92.79 - 95.06) | 90.38
(86.49-94.29) | 83.13
(74.71-91.55) | 67.61
(58.10-77.11) |
| Level 3 Past year | 1.46
(0.92-2.01) | 4.80
(3.21-6.40) | — | — |
| Level 2 Past Year | 2.54
(1.72-3.37) | 14.60
(8.32-20.89) | — | — |
| Level 1 Past Year | 96.04
(94.82-97.25) | 82.68
(76.12-89.17) |
1Although mean past-year estimates are higher than mean lifetime estimates for adolescents, there is considerable overlap between the confidence intervals of these measures; adolescents' past-year gambling experiences are likely to be comparable to their lifetime gambling experiences. Differences between instruments that provide past-year estimates among adolescents and instruments that provide lifetime estimates among adolescents most likely account for these discrepancies.
| Estimate Time Frame & Statistic | Adult | Adolescent | College | Treatment or Prison |
|---|---|---|---|---|
| Level 3 LifetimeMean | 1.92 | 3.38 | 5.56 | 15.44 |
| Median | 1.80 | 3.00 | 5.00 | 14.29 |
| 5% Trimmed Mean | 1.78 | 3.33 | 5.14 | 15.07 |
| Andrews' Wave M-Estimator | 1.73 | 2.74 | 4.64 | 13.49 |
| Level 2 LifetimeMean | 4.15 | 8.40 | 10.88 | 17.29 |
| Median | 3.50 | 8.45 | 6.50 | 15.64 |
| 5% Trimmed Mean | 3.76 | 8.35 | 9.83 | 17.01 |
| Andrews' Wave M-Estimator | 3.31 | 8.22 | 6.51 | 16.59 |
| Level 3 Past Year Mean | 1.46 | 4.80 | — | — |
| Median | 1.20 | 4.37 | — | — |
| 5% Trimmed Mean | 1.27 | 4.77 | — | — |
| Andrews' Wave M-Estimator | 1.10 | 4.65 | — | — |
| Level 2 Past Year Mean | 2.54 | 14.60 | — | — |
| Median | 2.20 | 11.21 | — | — |
| 5% Trimmed Mean | 2.25 | 13.83 | — | — |
| Andrews' Wave M-Estimator | 2.15 | 11.26 | — | — |