Table 3.
Logistic Regression Models Predicting Recent Successful Smoking Cessation by Self-Reported Local Price with a Two-Way Interaction.
| Race and Ethnicity Interactiona | Education Interactionb | Income Interactionc | ||||
|---|---|---|---|---|---|---|
| OR (95% CI) | p-Value | OR (95% CI) | p-Value | OR (95% CI) | p-Value | |
| Local price | 1.06 (0.99, 1.13) | .097 | 1.04 (0.97, 1.12) | .254 | 1.06 (0.98, 1.13) | .137 |
| Race and ethnicity (white reference) | ||||||
| Non-Hispanic black | 0.80 (0.59, 1.08) | .149 | ||||
| Hispanic | 1.31 (0.97, 1.76) | .075 | ||||
| Non-Hispanic other | 0.97 (0.67, 1.42) | .893 | ||||
| Race and ethnicity × price | ||||||
| Non-Hispanic black × price | 0.99 (0.92, 1.06) | .805 | ||||
| Hispanic × price | 0.96 (0.90,1.03) | .269 | ||||
| Non-Hispanic other × price | 0.97 (0.88,1.06) | .445 | ||||
| Education (college + reference) | ||||||
| Less than high school | 0.55 (0.41,0.73) | <.001 | ||||
| High school graduate | 0.61 (0.49,0.76) | <.001 | ||||
| Some college | 0.74 (0.60, 0.91) | .004 | ||||
| Education × price | ||||||
| Less than high school × price | 0.99 (0.92, 1.06) | .726 | ||||
| High school graduate × price | 0.99 (0.94, 1.04) | .695 | ||||
| Some college × price | 1.02 (0.97, 1.07) | .437 | ||||
| Income ($75 000 + reference) | ||||||
| Less than $15 000 | 0.61 (0.47, 0.80) | <.001 | ||||
| $15 000–29 999 | 0.68 (0.50, 0.91) | .011 | ||||
| $30 000–49 999 | 0.92 (0.69, 1.23) | .559 | ||||
| $50 000–74 999 | 1.12 (0.76, 1.65) | .535 | ||||
| Income × price | ||||||
| Less than $15 000 × price | 1.03 (0.97, 1.09) | .398 | ||||
| $15 000–29 999 × price | 1.01 (0.95, 1.08) | .701 | ||||
| $30 000–49 999 × price | 0.97 (0.91, 1.03) | .274 | ||||
| $50 000–74 999 × price | 0.95 (0.88, 1.03) | .214 | ||||
| Joint test of multiplicative interactions (p-value) | .637 | .618 | .179 | |||
| N | 101 712 | 101 712 | 101 712 | |||
aModel included an interaction term between local price and race and ethnicity, adjusting for age, age,2 gender, CPI-adjusted income, education with smoke-free laws and state and year-fixed effects.
bModel included an interaction term between local price and education, adjusting for age, age,2 gender, CPI-adjusted income, race and ethnicity with smoke-free laws and state and year-fixed effects.
cModel included an interaction term between local price and CPI-adjusted income, adjusting for age, age,2 gender, education, race and ethnicity with smoke-free laws and state and year-fixed effects.