Skip to main content

Table 2 Prevalence of current e-cigarette use and its associated factors among adolescents in Hong Kong

From: Electronic cigarette use among adolescents: a cross-sectional study in Hong Kong

 

%

(95 % CI)

P-value for x 2 or t-test

AORa (95 % CI)

Age, Mean (SD)

15.4

(2.0)

<.001

0.96 (0.88, 1.05)

Sex

  

<.001

 

  Girl

0.7

(0.5, 0.9)

 

1

  Boy

1.6

(1.4, 1.8)

 

1.94 (1.38, 2.73)**

Parental smoking

  

.003

 

  No

1.0

(0.8, 1.2)

 

1

  Yes

1.4

(1.2, 1.7)

 

1.00 (0.73, 1.37)

Peer smoking

  

<.001

 

  No

0.3

(0.2, 0.4)

 

1

  Less than half

1.3

(1.1, 1.6)

 

1.16 (0.69, 1.96)

  Half or more

6.1

(5.1, 7.3)

 

1.28 (0.72, 2.27)

Knowledge about the harm of cigarette smoking

  

<.001

 

  Good

0.7

(0.6, 0.8)

 

1

  Poor

4.6

(3.8, 5.5)

 

1.67 (1.16, 2.40)*

Attitudes toward smoking

  

<.001

 

  Negative

0.5

(0.4, 0.6)

 

1

  Neutral

2.3

(1.9, 2.8)

 

0.98 (0.66, 1.45)

  Positive

9.9

(7.7, 12.5)

 

1.09 (0.62, 1.92)

Cigarette smokingb

  

<.001

 

  Never smoker

0.1

(0.1, 0.2)

 

1

  Experimental smoker

2.0

(1.5, 2.7)

 

9.22 (5.57, 15.27)**

  Former smoker

9.6

(7.5, 12.1)

 

23.33 (13.38, 40.68)**

  Current smoker

9.6

(7.8, 11.9)

 

18.17 (10.08, 32.76)**

Other tobacco usec

  

<.001

 

  No

0.7

(0.6, 0.8)

 

1

  Yes

15.9

(13.2, 19.0)

 

3.59 (2.25, 5.72)**

Alcohol consumption

  

<.001

 

  Non-drinker

0.3

(0.2, 0.3)

 

1

  <1 day/month

1.0

(0.7, 1.3)

 

1.93 (1.26, 2.96)*

  ≥1 day/month

5.2

(4.4, 6.0)

 

3.16 (2.12, 4.72)**

  1. Note. AOR adjusted odds ratio, CI confidence interval
  2. aMultivariable logistic regression model adjusted for all variables listed in the table
  3. bNever smokers have never smoked a cigarette ; Experimental smokers smoked once or a few times; Former smokers smoked in the past but not now; Current smokers reported smoking now and smoked on at least one day in the past 30 days
  4. cOther tobacco use includes using any of the following in the past 30 days: waterpipe, chewing tobacco, cigars, snus, smoking pipe/snuff, or any other form of tobacco (other than cigarettes and e-cigarettes)
  5. * p < .01; ** p < .001