Step of tobacco tax increase | Before | After | χ2 | df | p Value |
---|---|---|---|---|---|
n (%) | n (%) | ||||
df, degree of freedom. | |||||
1 January 2002 | |||||
Reflect | 233 (35.1) | 336 (24.1) | 27.34 | 1 | 0 |
Quitting | 71 (10.7) | 65 (4.7) | 26.59 | 1 | 0 |
Reducing | 175 (26.4) | 161 (11.5) | 72.42 | 1 | 0 |
Cheaper brand | 72 (10.8) | 153 (11.0) | 0.01 | 1 | 0.937 |
No change | 346 (52.1) | 1007 (72.1) | 80.06 | 1 | 0 |
1 January 2003 | |||||
Reflect | 367 (35.9) | 328 (23.0) | 49.01 | 1 | 0 |
Quitting | 99 (9.7) | 57 (4.0) | 32.39 | 1 | 0 |
Reducing | 239 (23.4) | 170 (11.9) | 56.40 | 1 | 0 |
Cheaper brand | 153 (15.0) | 169 (11.8) | 5.12 | 1 | 0.024 |
No change | 529 (51.7) | 1020 (71.4) | 99.1 | 1 | 0 |
1 March 2004 | |||||
Reflect | 297 (54.5) | 277 (34.0) | 56.04 | 1 | 0 |
Quitting | 76 (13.9) | 64 (7.9) | 13.07 | 1 | 0 |
Reducing | 189 (34.7) | 134 (16.5) | 59.79 | 1 | 0 |
Cheaper brand | 80 (14.7) | 112 (13.8) | 0.23 | 1 | 0.633 |
No change | 198 (36.3) | 497 (61.1) | 79.87 | 1 | 0 |
1 December 2004 | |||||
Reflect | 443 (45.6) | 458 (38.0) | 12.59 | 1 | 0 |
Quitting | 103 (10.6) | 90 (7.5) | 6.48 | 1 | 0.011 |
Reducing | 327 (33.6) | 195 (16.2) | 89.77 | 1 | 0 |
Cheaper brand | 159 (16.4) | 240 (19.9) | 4.59 | 1 | 0.032 |
No change | 380 (39.1) | 663 (55.1) | 54.97 | 1 | 0 |
1 September 2005 | |||||
Reflect | 407 (45.4) | 431 (36.2) | 18.02 | 1 | 0 |
Quitting | 97 (10.8) | 73 (6.1) | 15.03 | 1 | 0 |
Reducing | 239 (26.7) | 198 (16.6) | 31.08 | 1 | 0 |
Cheaper brand | 139 (15.5) | 219 (18.4) | 3.00 | 1 | 0.083 |
No change | 416 (46.4) | 684 (57.5) | 25.04 | 1 | 0 |