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Table 3 Survival analysis results: effects of smoking-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

Cigarette brand

  

Blonde

105

80

85%

7.54

.54

6.48 - 8.59

3.931

.140

Black

12

9

75%

5.90

1.35

3.25 - 8.53

Rolling

8

6

73.1%

10.50

1.50

7.56 - 13.44

Nicotine concentration mg per cigarette

  

>1

23

20

85%

6.45

1.10

4.29 - 8.61

1.619

.44

>1 > 1.5

99

72

75%

7.90

.56

6.82 - 8.99

>1.5 2

3

3

73.1%

7.00

2.65

1.81 - 12.19

Number of cigarettes smoked daily

  

> 10

20

17

85%

7.94

1.14

5.71 - 10.17

.186

.980

>10 > 20

72

54

75%

7.44

.64

6.19 - 8.70

>20 > 30

26

19

73.1%

7.58

1.13

5.37 - 9.78

>30

7

5

71.4%

7.60

2.69

2.32 - 12.88

Fagerström test score

  

>6

99

77

77.8%

7.69

.54

6.63 - 8.75

.296

.586

>7

26

18

69.2%

7.06

1.14

4.83 - 9.28

Years of smoking

  

> 10 years

14

12

85.7%

7.17

1.47

4.28 - 10.05

2.560

.464

> 20 years

28

19

67.9%

8.26

1.09

6.12 - 10.40

> 30 years

40

33

82.5%

8.21

.82

6.60 - 9.83

> 30 years

43

31

72.1%

6.61

.84

4.98 - 8.25

Use of alcohol and/or tranquilizers

  

Neither

116

87

75%

8.07

.50

7.10 - 9.04

17.679

.001

Alcohol

7

7

100%

2.29

.71

.89 - 3.69

Tranquilizers

2

1

50%

1.00

.00

1.00 - 1.00