Recall of advertising campaign by perspective at follow up
| Follow up perspective (%) | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Advertisement | 1 | 2 | 3 | 4 | 5 | 6 | 7 | χ2 | df | p |
| Lung | 46.6 | 56.1 | 54.5 | 60.8 | 67.6 | 73.2 | 64.6 | 14.56 | 6 | 0.024 |
| Eye | 15.5 | 20.0 | 27.3 | 22.3 | 25.5 | 31.7 | 22.9 | 7.07 | 6 | 0.315 |
| Quitline | 0 | 5.0 | 9.1 | 7.2 | 5.5 | 4.9 | 12.5 | 10.33 | 6 | 0.111 |
| Total | 51.7 | 65.4 | 68.5 | 69.3 | 76.6 | 78.0 | 75.0 | 15.96 | 6 | 0.014 |
| n | 58 | 280 | 143 | 166 | 145 | 41 | 48 | |||