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Table 4 Survival analysis results: effects of treatment-related variables

From: Adherence to treatment to help quit smoking: effects of task performance and coping with withdrawal symptoms

Variables

Abstinence

95% IC

Log rank (Mantel-Cox)

p

Sample size

Number

Rates

Mean

Standard error

Past attempts to quit (N)

  

0

31

19

96.3%

7.21

1.13

4.99 - 9.43

4.415

.220

>2

79

63

79.7%

7.79

.59

6.64 - 8.95

>7

12

11

91.7%

7.91

1.51

4.95 - 10.87

>7

3

2

91.7%

2.00

1.00

.04 - 3.96

Compliance with the pharmacological therapy

  

Not

33

8

24.24%

7.38

1.83

3.79 -10.97

.008

.931

Yes

92

87

94.56%

7.59

.507

6.59 - 8.58

Performance of treatment tasks

  

Not

61

32

52.5%

2.81

.57

1.69 - 3.93

68.330

.001

Moderate

26

26

100%

8.04

.79

6.50 - 9.58

Yes

38

37

97.4%

11.35

.31

10.7 - 11.96

Number of treatment sessions

  

1-5

43

23

53.5%

6.78

1.03

4.77 – 8.80

8.283

.041

6-10

60

52

86.7%

8.71

.63

7.52 – 9.91

11-15

14

12

85.7%

6.08

1.38

3.37 - 8.80

16-20

8

8

100%

4.63

1.72

1.25 - 8.00

Coping with withdrawal symptoms

  

Ineffective

49

25

51%

2.76

.51

1.77 - 3.76

49.750

.001

Moderate

46

41

89.1%

8.17

.73

6.75 - 9.59

Effective

30

29

96.7%

10.86

.48

9.92 - 11.80

Physical exercice

Never

49

28

57.1%

4.18

.77

2.67 - 5.69

23.376

.001

Moderate

42

33

78.6%

8.85

.74

7.41 - 10.29

Frequent

34

34

100%

9.12

.75

7.65 - 10.59