Table 2. Intervention receptivity and engagement, by baseline smoking category (Experimental cohort only who were eligible for the intervention: n = 801).
| Transition Ratesa | ||||
|---|---|---|---|---|
| Infrequent N =263 |
Occasional N =186 |
Regular N =352 |
p-value for trendb |
|
| Intervention receptivity | ||||
| Eligible smokers successfully contacted for intervention (N=716) |
90.1% (n=237) |
88.7% (n=165) |
89.2% (n=314) |
p = 0.74 |
| Contacted smokers who accepted intervention offer (N=616) |
88.6% (n=210) |
86.1% (n=142) |
84.1% (n=264) |
p = 0.14 |
| Intervention engagement | ||||
| Accepting smokers who participated in 1 or more counseling calls (N=577) |
95.2% (n=200) |
91.5% (n=130) |
93.6% (n=247) |
p = 0.51 |
| Participating smokers who completed full intervention (N=396) |
80.5% (n=160) |
63.8% (n=83) |
61.5% (n=152) |
p < 0.01 |
a
Transition rate = # reaching outcome / # reaching previous outcome
b
p-value for transition rate trend using Cochran-Armitage Trend test (Armitage, 1955).
d
Total smokers eligible for intervention recruitment (801) = 240 age ≥ 18, plus 561 age <18 with parental consent. Parental consent rates were 87.2% for infrequent smokers, 87.2% for occasional smokers, and 82.1% for regular smokers (trend test: p = 0.20).