Table 2 Factors associated to experimentation of electronic cigarette in the multivariate analysis in a 2013 adolescent survey Paris

Age (>15 vs ≤15^a)

0.66

0.46

0.94

0.0217

Smoking status of best friend (smoker versus non-smoker or ex-smoker^a)

1.54

1.11

2.14

0.0089

Smoking status brother (smoker versus non-smoker or ex-smoker or only child^a)

1.88

1.41

2.52

<.0001

Ever smoked a cigarette versus no^a

4.46

2.81

7.09

<.0001

Ever smoked a shisha versus no^a

2.60

1.75

3.86

<.0001

Cannabis use versus no^a

1.90

1.32

2.72

0.0005

Smoking status:

- No smoking^a

- Smoking less than 10 cigarettes

2.28

1.57

3.29

<.0001

- Smoking 10 cigarettes or more

5.67

3.11

10.34

<.0001

Private school (vs. public school^a)

0.66

0.50

0.87

0.0035

Parental message of prohibition to smoke:

- No prohibition^a

- Prohibition of one parent

1.84

1.08

3.12

0.0243

- Prohibition of two

2.32

1.63

3.30

<.0001