Table 3.
Factor Analysis and Item Response Theory Analysis of Nicotine Dependence, Abuse, and Craving Criteria in Lifetime Smokers, N=727
| Factor Loadings | Item Response Theory parameters | |||||
|---|---|---|---|---|---|---|
| Lifetime Criteria | Dependence and Craving |
Dependence, Abuse, and Craving |
Dependence and Craving | Dependence, Abuse, and Craving | ||
| Nicotine Dependence | 1-factor model | 1-factor model | Discrimination (s.e.) | Severity (s.e.) | Discrimination (s.e.) | Severity (s.e.) |
| Tolerance | 0.662 | 0.657 | 1.494 (0.21) | −1.321 (0.13) | 1.465 (0.19) | −1.335 (0.13) |
| Withdrawal | 0.612 | 0.607 | 1.414 (0.19) | 1.081 (0.12) | 1.394 (0.17) | 1.088 (0.12) |
| Larger/longer | 0.678 | 0.634 | 1.535 (0.18) | −0.190 (0.07) | 1.372 (0.15) | −0.202 (0.08) |
| Quit/control | 0.627 | 0.603 | 1.350 (0.16) | −0.454 (0.08) | 1.256 (0.15) | −0.474 (0.09) |
| Time spent | 0.630 | 0.664 | 1.389 (0.17) | 0.464 (0.08) | 1.544 (0.19) | 0.439 (0.08) |
| Activities given up | 0.472 | 0.477 | 0.995 (0.16) | 1.972 (0.26) | 1.022 (0.15) | 1.930 (0.24) |
| Physical/psychological | 0.729 | 0.740 | 1.780 (0.23) | −1.118 (0.10) | 1.822 (0.22) | −1.104 (0.10) |
|
| ||||||
| Nicotine Abuse | ||||||
| Neglect roles | 0.534 | 1.261 (0.22) | 2.437 (0.32) | |||
| Hazardous use | 0.615 | 1.346 (0.15) | 0.564 (0.09) | |||
| Social/interpersonal | 0.547 | 1.095 (0.14) | 0.405 (0.09) | |||
|
| ||||||
| Nicotine Craving | ||||||
| Unbearable/strong desire | 0.626 | 0.643 | 1.335 (0.16) | −0.091 (0.08) | 1.426 (0.17) | −0.085 (0.07) |
|
| ||||||
| Model Fit Indices | ||||||
| CFI | 0.997 | 0.973 | ||||
| TLI | 0.997 | 0.977 | ||||
| RMSEA | 0.013 | 0.035 | ||||
| AIC | 6265.929 | 8338.017 | ||||
| BIC | 6339.352 | 8438.974 | ||||
| SS-BIC | 6288.547 | 8369.117 | ||||