Table 4 Random effects meta-analysis of average daily cigarette consumption per capita (mean) by demographic category: total sample (N = 202,898).

From: A cross-national analysis of demographic variation in daily smoking across 22 countries

 

Prediction Interval

 

Variable

Category

Est

95% CI

SE

LL

UL

Heterogeneity (τ)

I2

Global p-value

Age group

        

< 0.001**

 

18–24

1.52

(0.79,2.24)

0.37

0.09

7.98

1.72

99.8

 
 

25–34

2.35

(1.44,3.26)

0.47

0.21

10.24

2.17

99.8

 
 

35–44

2.76

(1.86,3.66)

0.46

0.31

9.81

2.14

99.6

 
 

45–54

2.77

(1.84,3.70)

0.47

0.24

10.33

2.20

99.6

 
 

55–64

2.76

(1.91,3.61)

0.43

0.11

8.53

2.01

99.3

 
 

65–74

1.77

(1.22,2.33)

0.28

0.07

4.88

1.27

98.5

 
 

75–84

0.80

(0.54,1.06)

0.13

0.08

1.80

0.47

90.8

 
 

85 or older

0.28

(0.10,0.47)

0.09

0.11

0.51

0.15

30.3

 

Gender

        

< 0.001**

 

Male

3.42

(2.18,4.66)

0.63

0.44

13.39

2.97

99.9

 
 

Female

1.41

(0.82,2.00)

0.30

0.05

5.61

1.40

99.9

 
 

Other

0.86

(0.40,1.33)

0.24

0.41

1.64

0.42

36.4

 

Marital status

        

< 0.001**

 

Married

2.23

(1.44,3.01)

0.40

0.24

8.54

1.87

99.8

 
 

Separated

2.74

(1.96,3.52)

0.40

0.51

6.17

1.71

95.9

 
 

Divorced

3.24

(1.99,4.50)

0.64

0.06

14.09

2.91

99.2

 
 

Widowed

1.57

(1.07,2.08)

0.26

0.07

3.46

1.11

97.1

 
 

Domestic partner

2.18

(1.58,2.78)

0.31

0.18

4.38

1.30

98.0

 
 

Single, never married

2.40

(1.40,3.41)

0.51

0.17

11.40

2.40

99.9

 

Employment

        

< 0.001**

 

Employed for an employer

2.76

(1.76,3.76)

0.51

0.18

10.49

2.38

99.8

 
 

Self-employed

3.23

(1.92,4.54)

0.67

0.30

14.63

3.11

99.8

 
 

Retired

1.96

(1.29,2.64)

0.34

0.22

7.27

1.57

99.0

 
 

Student

0.98

(0.52,1.44)

0.23

0.01

4.67

1.07

99.8

 
 

Homemaker

1.65

(1.00,2.30)

0.33

0.02

4.73

1.49

99.8

 
 

Unemployed and looking for a job

3.22

(2.07,4.37)

0.59

0.14

11.73

2.68

99.8

 
 

None of these/other

2.85

(1.84,3.86)

0.52

0.28

9.88

2.27

97.8

 

Education

        

< 0.001**

 

Up to 8 years

3.00

(2.10,3.90)

0.46

0.25

9.11

2.06

99.7

 
 

9–15 years

2.53

(1.65,3.41)

0.45

0.17

9.84

2.10

99.9

 
 

16 + years

1.65

(0.87,2.43)

0.40

0.09

8.92

1.85

99.8

 

Religious service attendance

        

< 0.001**

 

> 1/week

1.91

(1.12,2.70)

0.40

0.12

8.10

1.87

99.7

 
 

1/week

2.15

(1.31,2.98)

0.43

0.17

9.05

1.98

99.8

 
 

1–3/month

2.30

(1.51,3.09)

0.40

0.29

7.86

1.86

99.3

 
 

A few times a year

2.55

(1.57,3.53)

0.50

0.36

11.30

2.33

99.6

 
 

Never

2.74

(1.86,3.63)

0.45

0.58

10.04

2.10

99.6

 

Immigration status

        

< 0.001**

 

Born in this country

2.44

(1.59,3.30)

0.44

0.24

9.61

2.04

99.9

 
 

Born in another country

1.87

(1.16,2.59)

0.36

0.07

6.34

1.57

98.8

 
  1. τ = the standard deviation of the distribution of means across those countries; I2 = an estimate of how much of the variability in means is due to heterogeneity across countries vs. sampling variability.
  2. * p < .05; ** p < .007 (Bonferroni corrected threshold).