Sample characteristics (n=512)
| Condition | Standard | No descriptors | Plain | Non-female | Total |
| Sample size: | n=141 | n=125 | n=122 | n=124 | n=512 |
| Age, mean (SD) | 22.1 (2.1) | 21.8 (2.2) | 22.0 (2.2) | 22.0 (2.2) | 22 (2.2) |
| Ethnicity: | |||||
| White | 70.2% (99) | 73.6% (92) | 72.1% (88) | 74.2% (92) | 72.5 (371) |
| Other | 29.8% (42) | 26.4% (33) | 27.9% (34) | 25.8% (32) | 27.5 (141) |
| Income: | |||||
| Under $C10 000 to $C29 999 | 31.2% (44) | 27.2% (34) | 25.4% (31) | 27.4% (34) | 27.9% (143) |
| $C30 000 to $C59 999 | 29.8% (42) | 32% (40) | 33.6% (41) | 26.6% (33) | 30.5% (156) |
| $C60 000 and upwards | 27.7% (39) | 32% (40) | 32.8% (40) | 32.3% (40) | 31.1% (159) |
| Not stated | 11.3% (16) | 8.8% (11) | 8.2% (10) | 13.7% (17) | 10.5% (54) |
| Education level: | |||||
| Low | 22.7% (32) | 24% (30) | 30.3% (37) | 28.2% (35) | 26.2% (134) |
| Medium | 22.7% (32) | 17.6% (22) | 18% (22) | 21% (26) | 19.9% (102) |
| High | 54.6% (77) | 58.4% (73) | 51.6% (63) | 50.8% (63) | 53.9% (276) |
| Smoking status: | |||||
| Current smokers | 40.4% (57) | 39.2% (49) | 42.6% (52) | 43.6% (54) | 41.4% (212) |
| Former smokers | 7.1% (10) | 8.8% (11) | 8.2% (10) | 6.4% (8) | 7.6% (39) |
| Never smokers | 52.5% (74) | 52.0% (65) | 49.2% (60) | 50.0% (62) | 51.0% (261) |
| Cigarette smoking:* | |||||
| No. per day, mean (SD) | 11.2 (8.5) | 10.4 (9.2) | 9.4 (6.7) | 8.3 (7.0) | 9.8 (8.0) |
| Plans to quit smoking:* | |||||
| In next month | 17.7% (11) | 15.4% (8) | 10.4% (5) | 11.1% (6) | 13.9% (30) |
| In next 6 months | 22.6% (14) | 32.7% (17) | 33.3% (16) | 27.8% (15) | 28.7% (62) |
| Beyond 6 months | 40.3% (25) | 40.4% (21) | 47.9% (23) | 44.4% (24) | 43.1% (93) |
| Not planning to quit | 19.4% (12) | 11.5% (6) | 8.3% (4) | 16.7% (9) | 14.4% (31) |
Number in parentheses refer to sample sizes, except for age and cigarettes smoked.
↵* Among current smokers only.