Table 2.
Convergent Validity: Correlations Among Gambling Outcome Indices
| SOGS | GA20 | SOGS Freq | GABS | Quantity | GQPN Freq | GPI | |
|---|---|---|---|---|---|---|---|
| SOGS | — | .55 | .30 | .35 | .58 | .30 | .42 |
| GA20 | .55 | — | .43 | .56 | .61 | .44 | .52 |
| SOGS Freq | .30 | .43 | — | .41 | .39 | .42 | .46 |
| GABS | .35 | .56 | .41 | — | .47 | .36 | .35 |
| Quantity | .58 | .61 | .39 | .47 | — | .54 | .48 |
| GQPN Freq | .30 | .44 | .42 | .36 | .54 | — | .36 |
| GPI | .42 | .52 | .46 | .35 | .48 | .36 | — |
Note. N ’s ranged from 554 to 560 depending on missing data. SOGS refers to the South Oaks Gambling Screen. GA20 refers to the Gamblers Anonymous 20 Questions. SOGS Freq refers to the SOGS frequency index. GABS refers to the Gambling Attitudes and Beliefs Scale. GQPN Freq refers to the frequency item on the GQPN. GPI refers to Gambling Problems Index. All correlations are significant at p < .0001.