Table 1.
Associations between participant characteristics and the measures of nicotine dependence
| VARIABLE | FUTS | SUTS | HSI | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Mean (s.d) | d.f | P-value | Mean (s.d) | d.f | P-value | Mean (s.d) | d.f | P-value | |
| Age | |||||||||
| Quintile 1 | 3.5 (1.1) | 4; 2414 | 0.3035 | 3.6 (1.1) | 4 | 0.9768 | 2.9 (1.5) | 4 | <0.01 |
| Quintile 2 | 3.4 (1.1) | 3.5 (1.1) | 2.7 (1.6 ) | ||||||
| Quintile 3 | 3.5 (1.2) | 3.6 (1.2) | 3.3 (1.5) | ||||||
| Quintile 4 | 3.6 (1.2) | 3.6 (1.1) | 3.6 (1.6) | ||||||
| Quintile 5 | 3.5 (1.2) | 3.6 (1.1) | 3.5 (1.5) | ||||||
| Gender | |||||||||
| Male | 3.5 (1.2) | 2439 | 0.6899 | 3.5 (1.1) | 2439 | 0.2456 | 3.2 (1.6) | 2466 | 0.2637 |
| Female | 3.5 (1.1) | 3.6 (1.1) | 3.2 (1.6) | ||||||
| Ethnicity | |||||||||
| White | 3.5 (1.2) | 3; 2480 | 0.7406 | 3.6 (1.1) | 3 | 0.7051 | 3.2 (1.6) | 3 | <0.01 |
| Black/mixed | 3.5 (1.2) | 3.7 (1.2) | 2.8 (1.6) | ||||||
| Asian/mixed | 3.5 (1.3) | 3.5 (1.0) | 2.7 (1.6) | ||||||
| Other | 3.4 (1.3) | 3.7 (1.3) | 3.2 (1.6) | ||||||
| IMD score | |||||||||
| Quintile 1 | 3.4 (1.2) | 4; 2479 | 0.0618 | 3.6 (1.2) | 4 | 0.1203 | 2.9 (1.6) | 4 | <0.01 |
| Quintile 2 | 3.5 (1.2) | 3.5 (1.1) | 3.0 (1.6 ) | ||||||
| Quintile 3 | 3.5 (1.1) | 3.6 (1.1) | 3.2 (1.6) | ||||||
| Quintile 4 | 3.5 (1.2) | 3.5 (1.1) | 3.4 (1.5) | ||||||
| Quintile 5 | 3.6 (1.2) | 3.7 (1.2) | 3.5 (1.5) | ||||||
| Smoker in same household | |||||||||
| No | 3.5 (1.2) | 3.5 (1.1) | 3.2 (1.6) | ||||||
| Yes | 3.6 (1.2) | 2478 | <0.05 | 3.6 (1.1) | 2478 | 0.2063 | 3.3 (1.6) | 2505 | <0.05 |
| Free prescription entitlement | |||||||||
| No | 3.4 (1.1) | 3.4 (1.1) | 2.9 (1.6) | ||||||
| Yes | 3.6 (1.2) | 2456 | <0.01 | 3.6 (1.2) | 2456 | <0.01 | 3.4 (1.5) | 2483 | <0.01 |
| Quit attempt in last 12 months | |||||||||
| No | 3.5 (1.2) | 3.5 (1.1) | 3.2 (1.6) | ||||||
| Yes | 3.6 (1.1) | 2476 | 0.0621 | 3.7 (1.1) | 2475 | <0.01 | 3.2 (1.6) | 2501 | 0.2932 |
| Cessation support last quit attempt | |||||||||
| No | 3.5 (1.2) | 3.5 (1.1) | 3.1 (1.6) | ||||||
| Yes | 3.7 (1.1) | 2482 | <0.01 | 3.7 (1.1) | 2482 | <0.01 | 3.4 (1.5) | 2509 | <0.01 |
| Current cessation support | |||||||||
| No | 3.5 (1.2) | 2.5 (1.1) | 3.2 (1.6) | ||||||
| Yes | 3.6 (1.2) | 2482 | 0.2969 | 3.6 (1.1) | 2482 | 0.3838 | 3.4 (1.5) | 2509 | <0.01 |
| Trial intervention | |||||||||
| Reactive support without NRT | 3.6 (1.2) | 3 | 0.7149 | 3.5 (1.2) | 3 | 0.6796 | 3.2 (1.6) | 3 | 0.9512 |
| Reactive support with NRT | 3.5 (1.1) | 3.6 (1.1) | 3.2 (1.6) | ||||||
| Proactive support without NRT | 3.5 (1.2) | 3.5 (1.1) | 3.2 (1.6) | ||||||
| Proactive support with NRT | 3.5 (1.2) | 3.6 (1.1) | 3.2 (1.6) | ||||||
FUTS = Frequency of urges to smoke; SUT=Strength of urges to smoke; HSI=Heaviness of smoking Index; s.d=standard deviation d.f=degrees of freedom – values provided are for the model and residual; IMD=Index of Multiple Deprivation
With the exception of age, ethnicity and IMD score, all significance testing between participant characteristics and measures of dependence conducted using Students t-test. Significance testing for age, ethnicity and IMD score conducted using Analysis of Variance (ANOVA).