Table 4.
Estimated model with 'willingness for genetic testing' as the dependent variable.
| Parameter | OR (95% CI) |
Interaction between African American race and covariates† |
p-value of interaction term |
||
|---|---|---|---|---|---|
| All (n = 392) |
African American (n = 189) |
White (n = 203) | |||
| Serious intention to quit | |||||
| Yes | 1.47(0.25–8.61) | 1.49(0.032–7.04) | 1.57(0.22–11.27) | 0.95 | 0.9628 |
| No/don't know | Ref | Ref | Ref | ||
| How soon after you wake up do you smoke | |||||
| Less than 5 min | 3.59(0.56–23.00) | 1.45(0.40–5.31) | 3.87(0.48–31.04) | 0.38 | 0.4157 |
| After 5 min | Ref | Ref | Ref | ||
| Ever used medication for smoking cessation | |||||
| Yes | 2.70(0.66–11.07) | 4.20(0.85–20.83) | 2.72(0.62–11.90) | 1.55 | 0.6799 |
| No | Ref | Ref | Ref | ||
| Influence of medication/counseling on ability to quit | |||||
| Very important | 8.94(1.86–43.06)** | 15.50(3.02–79.48)** | 8.08(1.47–44.53)* | 1.97 | 0.6222 |
| Somewhat/not very/not at all important |
Ref | Ref | Ref | ||
| Influence of willpower on ability to quit | |||||
| Very Important | 0.76(0.13–4.36) | 1.42(0.10–19.72) | 0.71 (0.11–4.43) | 1.93 | 0.5165 |
| Somewhat/not very/not at all important | Ref | Ref | Ref | ||
| Influence of having God's help on ability to quit | |||||
| Very important | 0.11 (0.02–0.71)* | 1.36(0.28–6.72) | 0.10(0.01–0.73)* | 13.90 | 0.0415 |
| Somewhat/not very/not at all important |
Ref | Ref | Ref | ||
| Influence of having friends or family who support the attempt to quit | |||||
| Very important | 2.80(0.58–13.55) | 2.75(0.61–12.50) | 2.92(0.53–16.15) | 0.94 | 0.9562 |
| Somewhat/not very/not at all important |
Ref | Ref | Ref | ||
| Sex | |||||
| Female | 3.26(0.80–13.24) | 2.80(0.85–9.22) | 3.42(0.77–15.16) | 0.82 | 0.8391 |
| Male | Ref | Ref | Ref | ||
| Age | |||||
| More than 45 years | 0.62 (0.17–2.29) | 1.02(0.30–3.49) | 0.61 (0.15–2.48) | 1.67 | 0.5884 |
| Between 18 and 45 years |
Ref | Ref | Ref | ||
| Race | |||||
| African American | 3.80(1.09–13.22)* | – | – | – | – |
| White | Ref | ||||
| Statistics | |||||
| Likelihood ratio (p-value for H0: β = 0) |
16,034,575 (<0.0001) | 998,066 (<0.0001) | 14,590,028 (<0.0001) |
– | – |
| Wald statistics (p-value for H0: β = 0) |
31.9(0.0004) | 22.13(0.0084) | 23.66(0.0049) | – | – |
| C-statistic | 0.68 | 0.71 | 0.73 | – | – |
*
p < 0.1.
**
p<0.05.
†
African American and white races have been dummy coded as 1 and 0, respectively, in the interaction model.
OR: Odds ratio; Ref: Variable levels that have been used as reference when calculating odds ratios.