Table 4

The multiple regression models about confidence level as to the avoidance of household SHS exposure among third through sixth graders in southern Taiwan, arranged according to survey year and gender

Order of Entry

Mult. R

R2 (%)

R2 change (%)

Sig. change


Wave 1, Male

Model 1

0.20

4.1

4.1

Fchange =

3.90,

P < 0.001

Model 2

0.23

5.3

1.2

Fchange=

14.10,

P < 0.001

Model 3

0.26

6.9

1.6

Fchange =

3.86,

P < 0.001

Model 4

0.31

9.4

2.5

Fchange =

30.16,

P < 0.001

Model 5

0.35

11.9

2.5

Fchange =

30.56,

P < 0.001

Wave 1, Female

Model 1

0.26

6.6

6.6

Fchange =

6.13,

P < 0.001

Model 2

0.27

7.4

0.8

Fchange =

9.47,

P < 0.001

Model 3

0.32

10.3

2.8

Fchange =

6.55,

P < 0.001

Model 4

0.35

12.1

1.8

Fchange =

21.29,

P < 0.001

Model 5

0.35

12.3

0.3

n.s.

Wave 2, Male

Model 1

0.14

2.0

2.0

n.s.

Model 2

0.20

3.9

1.9

Fchange =

19.09,

P < 0.001

Model 3

0.25

6.1

2.3

Fchange =

4.65,

P < 0.001

Model 4

0.28

8.1

2.0

Fchange =

20.67,

P < 0.001

Model 5

0.33

10.6

2.5

Fchange =

27.40,

P < 0.001

Wave 2, Female

Model 1

0.20

4.1

4.1

Fchange =

3.69,

P < 0.001

Model 2

0.22

4.8

0.7

Fchange =

7.58,

P < 0.01

Model 3

0.28

8.0

3.2

Fchange =

7.19,

P < 0.001

Model 4

0.32

10.4

2.4

Fchange =

27.73,

P < 0.001

Model 5

0.33

11.0

0.6

Fchange =

6.63,

P < 0.01


Model 1: This model included socio-demographic factors

Model 2: The variables included socio-demographic factors and student smoking behavior

Model 3: The variables included socio-demographic factors, student smoking behavior, household SHS exposure, and family smoking

Model 4: The variables included socio-demographic factors, student smoking behavior, household SHS exposure, family smoking, and attitude toward smoking

Model 5: The variables included socio-demographic factors, student smoking behavior, household SHS exposure, family smoking, attitude toward smoking, and knowledge of tobacco hazards

Huang et al. BMC Public Health 2012 12:40   doi:10.1186/1471-2458-12-40

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