Adherence to intervention components and importance ranking at week 12 for the intervention group (number and percentage in brackets)
| Baseline (%) | Week 7 (%) | Week 12 (%) | |
| Intervention group study participants | 102 (100) | 95 (93) | 95 (93) |
| Received valid air quality feedback | 101 (99) | 94 (92) | 91 (89) |
| Received behavioural support | 102 (100) | 95 (93) | 95 (93) |
| Used any NRT during the study* | – | 73 (79) | 64 (67) |
| Used inhalator | – | 39 (42) | 31 (33) |
| Used gum | – | 36 (39) | 24 (26) |
| Used lozenge | – | 22 (24) | 16 (17) |
| Used patch | – | 15 (16) | 13 (14) |
| Used quick mist | – | 22 (24) | 16 (17) |
| Used other | – | 2 (2) | 1 (1) |
| Ranking of intervention components | |||
| Ranked air quality feedback first | – | – | 65 (68) |
| Ranked behavioural support first | – | – | 13 (14) |
| Ranked NRT first | – | – | 17 (18) |
| Ranked air quality feedback second | – | – | 21 (22) |
| Ranked behavioural support second | – | – | 49 (52) |
| Ranked NRT second | – | – | 24 (26) |
| Ranked air quality feedback third | – | – | 10 (11) |
| Ranked behavioural support third | – | – | 31 (33) |
| Ranked NRT third | – | – | 53 (56) |
*Considers the use of NRT after first advice from smoke-free homes advisors.
NRT, nicotine replacement therapy.