Table 3. Comparison of changes in the mean total scores of SF-12 in two intervals between the two groups .

Scale	P value A1 vs. A2	P value B1 vs. B2
General health	0.029	0.269
Physical functioning	0.001	0.874
Physical health	0.214	0.038
Mental health	0.288	0.209
Social functioning	0.002	0.011
Bodily pain	0.083	0.095
Vitality	0.529	0.006
Emotional well-being	0.227	0.323

A: cessation group; B: smoking group.