Skip to main content

Table 3 Relative Risk ratio’s for smoking abstinence, all comparisons between conditions

From: Electronic cigarettes in standard smoking cessation treatment by tobacco counselors in Flanders: E-cigarette users show similar if not higher quit rates as those using commonly recommended smoking cessation aids

Comparisons

FU1

FU2

FU3

Continuous abstinence

Prolonged abstinence

E-cigarette vs. NRT

1.05

[0.79–1.40]

0.75

1.23

[0.89–1.69]

0.22

1.71

[1.04–2.81]

0.03*

1.65

[0.72–3.80]

0.24

1.30

[0.65–2.62]

0.46

E-cigarette vs. Medication

0.79

[0.59–1.05]

0.10

0.84

[0.61–1.15]

0.27

1.20

[0.69–2.10]

0.52

0.71

[0.32–1.56]

0.39

0.83

[0.38–1.77]

0.62

E-cigarette vs. E-cigarette + NRT

1.11

[0.75–1.64]

0.60

1.02

[0.70–1.49]

0.91

1.20

[0.69–2.10]

0.52

0.81

[0.35–1.86]

0.62

0.83

[0.38–1.77]

0.62

E-cigarette vs. No aid

0.93

[0.66–1.32]

0.69

1.02

[0.69–1.49]

0.94

1.24

[0.69–2.23]

0.47

0.89

[0.37–2.14]

0.79

1.03

[0.44–2.44]

0.94

NRT vs. Medication

0.75

[0.56–1.00]

0.05

0.68

[0.48–0.96]

0.03*

0.70

[0.37–1.32]

0.27

0.43

[0.18–1.05]

0.06

0.64

[0.89–1.41]

0.26

NRT vs. E-cigarette + NRT

1.06

[0.72–1.56]

0.77

0.83

[0.56–1.24]

0.37

0.70

[0.37–1.32]

0.27

0.49

[0.19–1.24]

0.13

0.64

[0.89–1.41]

0.26

NRT vs. No aid

0.89

[0.63–1.26]

0.51

0.83

[0.55–1.24]

0.36

0.73

[0.38–1.39]

0.33

0.54

[0.20–1.42]

0.21

0.80

[0.33–1.93]

0.61

Medication vs.

E-cigarette + NRT

1.41

[0.96–2.09]

0.08

1.22

[0.82–1.81]

0.32

1.00

[0.51–1.98]

1.00

1.14

[0.47–2.79]

0.77

1.00

[0.43–2.35]

1.00

Medication vs. No aid

1.19

[0.84–1.68]

0.34

1.22

[0.82–1.81]

0.34

1.03

[0.51–2.09]

0.93

1.25

[0.49–3.20]

0.64

1.25

[0.49–3.20]

0.64

No aid vs.

E-cigarette + NRT

1.90

[0.77–1.84]

0.43

1.01

[0.64–1.57]

0.98

0.97

[0.48–1.95]

0.93

0.91

[0.35–2.42]

0.85

0.80

[0.31–2.04]

0.64

E-cigarette vs.

All other conditions

0.98

[0.77–1.24]

0.83

1.05

[0.82–1.36]

0.68

1.39

[0.96–2.02]

0.08

1.03

[0.56–1.90]

0.93

1.02

[0.59–1.79]

0.34

  1. All are RR, 95% CI and p-values. * p < 0.05. + p < 0.005, when standard alpha levels of 0.05 were adjusted familywise using the Bonferroni correction to 0.005. When absent at a FU, participants were included as “failure” (i.e. not achieved smoking abstinence).