Characteristics | Age cohort (n (%)) | Total (n (%)) | |||||
2001 | 2000 | 2000 | 2000 | 2000 | 2000 | ||
12-year-old cohort | 12-year-old cohort | 13-year-old cohort | 14-year-old cohort | 15-year-old cohort | 16-year-old cohort | ||
Gender | |||||||
Male | 274 (47.8) | 390 (47.4) | 450 (52.6) | 417 (50.3) | 408 (48.8) | 387 (47.2) | 2326 (49.1) |
Female | 299 (52.2) | 432 (52.6) | 405 (47.4) | 412 (49.7) | 428 (51.2) | 433 (52.8) | 2409 (50.9) |
Race/ethnicity | |||||||
White | 466 (83.4) | 667 (81.2) | 729 (85.4) | 709 (85.5) | 732 (87.6) | 712 (86.6) | 4015 (85.1) |
Non-white | 93 (16.6) | 154 (18.8) | 125 (14.6) | 120 (14.5) | 104 (12.4) | 108 (13.2) | 703 (14.9) |
Parent education | |||||||
High school or less | 103 (22.1) | 157 (22.7) | 138 (19.7) | 130 (19.9) | 125 (19.9) | 132 (22.0) | 785 (21.0) |
Some college | 73 (15.7) | 139 (20.1) | 168 (24.0) | 177 (27.1) | 163 (26.0) | 144 (24.0) | 864 (23.1) |
College graduate | 213 (45.7) | 272 (39.3) | 246 (35.1) | 206 (31.5) | 176 (28.1) | 190 (31.7) | 1303 (34.9) |
Graduate school | 77 (16.5) | 124 (17.9) | 148 (21.1) | 141 (21.6) | 163 (26.0) | 133 (22.2) | 786 (21.0) |
Level of urbanisation* | 7.0±2.5 | 6.8±2.6 | 6.8±2.6 | 6.8±2.6 | 6.7±2.6 | 6.8±2.5 | 6.8±2.6 |
Perceived prevalence of smoking in movies at baseline | |||||||
Never | 5 (0.9) | 9 (1.1) | 11 (1.3) | 5 (0.6) | 6 (0.7) | 4 (0.5) | 40 (0.8) |
Hardly ever | 121 (21.2) | 124 (15.2) | 121 (14.2) | 94 (11.4) | 83 (10.0) | 85 (10.4) | 628 (13.3) |
Some of the time | 270 (47.3) | 418 (51.2) | 431 (50.6) | 414 (50.4) | 436 (52.4) | 400 (49.0) | 2369 (50.3) |
Most of the time | 175 (30.6) | 265 (32.5) | 289 (33.9) | 309 (37.6) | 307 (36.9) | 327 (40.1) | 1672 (35.5) |
Smoking stage at baseline | |||||||
Never | 503 (86.3) | 735 (87.9) | 683 (79.1) | 555 (66.1) | 494 (58.1) | 375 (44.5) | 3300 (69.2) |
Trier | 66 (11.3) | 82 (9.8) | 134 (15.5) | 182 (21.7) | 197 (23.2) | 194 (23.0) | 855 (17.9) |
Less than monthly | 6 (1.0) | 9 (1.1) | 16 (1.9) | 36 (4.3) | 52 (6.1) | 101 (12.0) | 220 (4.6) |
Experimental smoker | 3 (0.5) | 4 (0.5) | 15 (1.8) | 18 (2.1) | 33 (3.9) | 35 (4.2) | 108 (2.3) |
Regular smoker | 4 (0.7) | 5 (0.6) | 9 (1.0) | 22 (2.6) | 34 (4.0) | 46 (5.5) | 120 (2.5) |
Established smoker | 1 (0.2) | 1 (0.1) | 6 (0.7) | 27 (3.2) | 40 (4.7) | 91 (10.8) | 166 (3.5) |
↵* Means and SDs.