Table 2. Likelihood of Re-Enrollment (Enrolling ≥2 Times) in Arizona Smokers’ Helpline, Compared With One-Time–Only Enrollment, January 1, 2011–June 26, 2016.
| Variable | Model 1 (n = 34,552)a
|
Model 2 (n = 12,120)b
|
||
|---|---|---|---|---|
| OR (95% CI) | P Value | OR (95% CI) | P Value | |
| Baseline | ||||
| Age, per 10-year increase | 1.12 (1.09–1.15) | <.001 | 1.04 (1.00–1.09) | .06 |
| Sex | ||||
| Female | 1 [Reference] | 1 [Reference] | ||
| Male | 0.83 (0.77–0.90) | <.001 | 0.77 (0.69–0.86) | <.001 |
| Mode of entry into program | ||||
| Self-referral | 1 [Reference] | 1 [Reference] | ||
| Provider referral | 0.83 (0.76–0.91) | <.001 | 0.84 (0.74–0.95) | .01 |
| Insurance type | ||||
| No insurance | 1 [Reference] | 1 [Reference] | ||
| Medicaid | 0.87 (0.78–0.97) | .01 | 0.68 (0.58–0.80) | <.001 |
| Private insurance | 0.97 (0.89–1.06) | .54 | 0.87 (0.77–0.99) | .04 |
| Social support | ||||
| Good, very good, or excellent | 1 [Reference] | 1 [Reference] | ||
| Poor or fair | 1.17 (1.08–1.28) | .01 | 1.06 (0.94–1.20) | .36 |
| Other smokers in the home | ||||
| No | 1 [Reference] | 1 [Reference] | ||
| Yes | 0.90 (0.84–0.97) | .01 | 0.83 (0.74–0.92) | .01 |
| Fagerström Test for Nicotine Dependence | 1.04 (1.03–1.06) | <.001 | 1.03 (1.00–1.05) | .02 |
| Mental health condition | ||||
| No | 1 [Reference] | 1 [Reference] | ||
| Yes | 1.49 (1.38–1.61) | <.001 | 1.29 (1.15–1.44) | <.001 |
| Chronic health condition | ||||
| No | 1 [Reference] | 1 [Reference] | ||
| Yes | 1.12 (1.03–1.21) | .01 | 1.14 (1.02–1.28) | .02 |
| Confidence to quit for 24 hours | ||||
| Somewhat or not | 1 [Reference] | 1 [Reference] | ||
| Very or extremely | 1.12 (1.01–1.24) | .04 | 1.12 (0.96–1.30) | .14 |
| Postbaseline | ||||
| 30-Day cessation at 7-month follow-up | ||||
| Abstinent | — | 1 [Reference] | ||
| Not abstinent | 2.89 (2.54–3.30) | <.001 | ||
| Number of telephone counseling sessions before 7-month follow-up | ||||
| 0–4 | — | 1 [Reference] | ||
| ≥5 | 0.94 (0.84–1.05) | .26 | ||
| Use of nicotine replacement therapy | ||||
| No | — | 1 [Reference] | ||
| Yes | 1.14 (1.00–1.29) | .05 | ||
Abbreviations: CI, confidence interval; OR, odds ratio.
a
Model 1 included only baseline covariates for clients with complete data. C index = 0.60. C index measures goodness of fit; values range from 0.5 to 1.0; a C index of 0.5 indicates a model with no predictive ability.
b
Model 2 included both baseline and follow-up covariates for clients with complete data. C index = 0.65. C index measures goodness of fit; values range from 0.5 to 1.0; a C index of 0.5 indicates a model with no predictive ability.