Table 2 Mean scores of knowledge, percentages of tobacco smoking, and mean scores of Theory of Planned Behavior (TPB) constructs at baseline, one-, and three-month follow-ups by intervention groups among a sample of adults living in deprived areas of Tehran, Iran

Knowledge

6.50 ± 2.18

10.19 ± 0.99

10.84 ± 0.42

6.13 ± 2.25

9.77 ± 1.24

10.69 ± 0.51

Tobacco smoking

49 (24.50%)

41 (23.43%)

26 (18.44%)

48 (24%)

40 (23.24%)

17 (12.98%)

Intention

2.66 ± 0.99

3.10 ± 1.08

3.56 ± 1.14

2.72 ± 0.96

3.19 ± 1.10

3.84 ± 1.15

Attitude

3.30 ± 0.99

3.86 ± 0.81

4.12 ± 0.80

2.94 ± 0.81

3.52 ± 0.77

4.25 ± 0.78

Subjective norm

2.77 ± 0.89

3.21 ± 0.88

3.78 ± 0.93

2.51 ± 0.95

3.11 ± 0.98

3.97 ± 1.15

Perceived behavioral control

3.19 ± 0.70

3.60 ± 0.71

3.93 ± 0.82

3.05 ± 0.79

3.58 ± 0.71

4.13 ± 0.86