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Table 2 Percentage and adjusted odds ratios of U.S. middle and high school students who think breathing smoke from other people’s cigarettes or other tobacco products causes ‘some’ or ‘a lot’ of harm, by selected characteristics - National Youth Tobacco Survey, 2012

From: Perceptions about the harm of secondhand smoke exposure among U.S. middle and high school students: findings from the 2012 National Youth Tobacco Survey

Characteristic

Unweighted frequency

Percentage

Adjusted odds ratioa

 

n

%

95% CI

Odds ratio

95% CI

Sex

     

  Girl

11,757

79.0

77.8-80.1

1.00

 

  Boy

11,581

71.8

70.5-73.1

0.72

0.66-0.77

Race/Ethnicity

     

  White, Non-Hispanic

12,691

75.6

74.3-76.8

1.00

 

  Black, Non-Hispanic

3,112

72.2

70.3-74.0

0.83

0.74-0.93

  Hispanic

5,247

76.0

74.3-77.7

1.07

0.96-1.19

  Asian, Non-Hispanic

1,141

83.6

80.7-86.2

1.43

1.15-1.78

  American Indian/Alaska Native, Non-Hispanic

319

72.3

65.8-77.9

0.98

0.72-1.34

  Native Hawaiian/Pacific Islander, Non-Hispanic

165

80.7

69.1-88.7

1.31

0.60-2.85

Grade Level

     

 Middle School

10,943

73.7

72.2-75.2

  

  6th

3,368

73.6

71.0-76.1

1.00

 

  7th

3,830

73.1

70.6-75.4

0.99

0.80-1.22

  8th

3,745

74.4

71.4-77.3

1.08

0.86-1.35

 High School

12,337

76.7

75.4-78.0

  

  9th

3,110

74.1

71.7-76.4

1.14

0.92-1.40

  10th

2,966

76.6

74.7-78.4

1.36

1.14-1.61

  11th

3,210

78.1

76.2-79.9

1.49

1.23-1.82

  12th

3,051

78.6

76.7-80.4

1.69

1.38-2.08

Tobacco Use (Past 30 Days) b

     

  No Tobacco Use

19,173

77.9

76.8-78.9

1.00

 

  Non-Combustible Tobacco Use Only

2,491

71.9

66.6-76.6

0.79

0.62-1.02

  Combustible Tobacco Use Only

311

65.8

63.5-68.0

0.51

0.45-0.57

  Combustible and Non-Combustible Tobacco Use

869

52.1

48.1-56.1

0.31

0.26-0.36

Lives with a Tobacco User c

     

  No

13,096

78.3

77.3-79.3

1.00

 

  Yes

9,788

72.1

70.7-73.5

0.81

0.75-0.87

Overall

23,346

75.4

74.4-76.3

  
  1. Abbreviation: CI confidence interval.
  2. a Odds ratios were computed using a binary logistic regression model adjusted for all covariates listed in the table. Statistically significant odds ratios are noted in bold.
  3. b A respondent was considered to be a combustible tobacco user if they reported using cigarettes, cigars/cigarillos/little cigars, pipes, roll-your-own-cigarettes, bidis, clove cigarettes, hookahs or water pipes on at least 1 day during the past 30 days. Non-combustible tobacco users were defined as respondents who reported using chewing tobacco/snuff/dip, snus, or dissolvable tobacco products on at least 1 day during the past 30 days.
  4. c A respondent was considered to live with a tobacco user if they reported that anyone who lives with them now smokes cigarettes, uses smokeless tobacco such as chewing tobacco, smokes cigars, cigarillos, or little cigars, or uses any other form of tobacco.