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Baseline Characteristics
| Characteristic | Total | Study Arm |
|
| IVR only | IVR + CB | ||
| N | 731 | 367 | 364 |
| Age (mean) | 52.2 | 52.3 | 52.1 |
| Female (%) | 44 | 45 | 44 |
| Cigarettes/day (median) | 15 | 17.5 | 15 |
| Intend to remain quit (%) | 37 | 38 | 35 |
| Cardiac service (%) | 36 | 36 | 36 |
Note. IVR = interactive voice response; IVR only = IVR call for outcome assessment only; IVR + CB = IVR call for outcome assessment plus offer of call back from hospital smoking counselor.
