| School type | Smoking experience | Family smoking | Total | Male | Female |
| Junior high school students n = 4257 | Yes 540 | Father smokes | 293 (141) | 182 (92) | 111 (49) |
| Mother smokes | 198 (54) | 113 (31) | 85 (23) | ||
| Older brother smokes | 69 (19) | 40 (10) | 29 (9) | ||
| Older sister smokes | 45 (3) | 24 (2) | 21 (1) | ||
| Another family member smokes | 202 | 120 | 82 | ||
| None smokes | 121 | 74 | 47 | ||
| No 3717 | Father smokes | 1816 (1374) | 932 (717) | 884 (657) | |
| Mother smokes | 528 (159) | 258 (69) | 270 (90) | ||
| Older brother smokes | 157 (55) | 65 (24) | 92 (31) | ||
| Older sister smokes | 53 (14) | 24 (7) | 29 (7) | ||
| Another family member smokes | 684 | 334 | 350 | ||
| None smokes | 1431 | 719 | 712 | ||
| High school students n = 4656 | Yes 947 | Father smokes | 316 (154) | 157 (77) | 159 (77) |
| Mother smokes | 171 (62) | 102 (40) | 69 (22) | ||
| Older brother smokes | 113 (28) | 60 (13) | 53 (15) | ||
| Older sister smokes | 63 (8) | 22 (2) | 41 (6) | ||
| Another family member smokes | 429 | 331 | 98 | ||
| None smokes | 266 | 192 | 74 | ||
| No 3709 | Father smokes | 1544 (1263) | 735 (552) | 809 (711) | |
| Mother smokes | 366 (108) | 175 (50) | 191 (58) | ||
| Older brother smokes | 281 (95) | 129 (46) | 152 (49) | ||
| Older sister smokes | 90 (17) | 32 (5) | 58 (12) | ||
| Another family member smokes | 480 | 278 | 202 | ||
| None smokes | 1746 | 815 | 931 |