Table 3.
Results from the exploratory generalized estimating equations (GEE) model regressing attrition status onto nicotine content transition, study period, age, strength and taste subjective ratings, CO boost, and total puff volume.
| B (SE) | Wald χ2 | P | Odds Ratio | 95% CI (LB,UB) | |
|---|---|---|---|---|---|
| Intercept | −2.38 (.81) | 8.58 | .003 | .09 | (.02, .46) |
| Nicotine content transition | |||||
| Control (no transition) | REF | REF | REF | REF | REF |
| High to moderate | −.49 (.54) | .82 | .37 | .61 | (.21, 1.78) |
| High to low | 1.15 (.57) | 4.02 | .045 | 3.15 | (1.03, 9.67) |
| Moderate to high | .06 (.80) | .01 | .94 | 1.06 | (.22, 5.05) |
| Moderate to low | .28 (.55) | .27 | .60 | 1.33 | (.46, 3.87) |
| Low to high | .34 (.64) | .29 | .59 | 1.41 | (.40, 4.91) |
| Low to moderate | .49 (.66) | .54 | .46 | 1.63 | (.45, 5.96) |
| Preferred brand to high | −.30 (.52) | .33 | .57 | .74 | (.27, 2.07) |
| Preferred brand to moderate | .30 (.62) | .23 | .63 | 1.35 | (.40, 4.53) |
| Preferred brand to low | 1.30 (.53) | 5.96 | .015 | 3.66 | (1.29, 10.40) |
| Study period | |||||
| Second | 1.02 (.55) | 3.41 | .065 | 2.76 | (.94, 8.12) |
| Third | 1.27 (.40) | 10.07 | .002 | 3.56 | (1.63, 7.80) |
| Fourth | REF | REF | REF | REF | REF |
| Age | −.03 (.01) | 10.52 | .001 | .97 | (.95, .99) |
| Strength | −.01 (.01) | 0.81 | .37 | .99 | (.98, 1.01) |
| Taste | −.02 (.01) | 6.34 | .012 | .98 | (.97, 1.00) |
| CO boost | −.06 (.03) | 2.81 | .09 | .95 | (.89, 1.01) |
| Total puff volume | .00 (.00) | 1.08 | .30 | 1.00 | (1.00, 1.00) |