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Table 2 Prevalence of single and multiple behavioral risk factors, by sex, at each time point, National Longitudinal Survey of Children and Youth, 2000-2005

From: Individual and social determinants of multiple chronic disease behavioral risk factors among youth

  

Time 1a

Time 2a

Time 3a

 
  

(n = 1135)

(n = 1135)

(n = 1135)

p

  

%b

95% CIc

%b

95% CIc

%b

95% CIc

for trendd

Risk factors

        

   Physical inactivitye

Male

43

36, 49

44

37, 50

61

55, 67

<.001

 

Female

57

50, 64

59

52, 65

72

65, 78

.002

   Sedentary behaviorf

Male

49

42, 55

43

37, 50

50

44, 56

.78

 

Female

36

30, 42

36

30, 43

36

29, 42

.99

Ever smokingg

Male

6

3, 11

12

9, 17

31

26, 38

<.001

 

Female

6

3, 10

15

11, 20

29

24, 36

<.001

Ever drinkingh

Male

7

4, 11

16

12, 22

48

41, 54

<.001

 

Female

5

3, 9

14

10, 18

48

41, 55

<.001

   High body mass indexi

Male

24

19, 30

23

17, 30

18

13, 23

.07

 

Female

22

17, 29

15

11, 19

14

10, 18

.05

No. of Risk factors

        

   0

Male

31

25, 37

21

17, 26

6

4, 11

<.001

 

Female

26

21, 32

22

17, 28

10

6, 16

<.001

   1

Male

38

32, 44

40

34, 47

27

22, 32

.003

 

Female

44

37, 50

39

33, 47

31

24, 38

.01

   2

Male

24

19, 30

27

22, 33

37

31, 43

.002

 

Female

24

19, 29

25

18, 32

27

21, 34

.42

   3-5

Male

7

5, 11

12

8, 16

30

25, 36

<.001

 

Female

6

4, 11

14

10, 19

32

27, 38

<.001

  1. CI = confidence interval.
  2. a Time 1 refers to Cycle 4 (2000-2001), Time 2 refers to Cycle 5 (2002-2003) and Time 3 refers to Cycle 6 (2004-2005) of the National
  3. Longitudinal Survey of Children and Youth.
  4. b Weighted percentage expressed in terms of the proportion of Canadian children aged 10-11 years in Cycle 4 and followed biennially
  5. until Cycle 6 of the National Longitudinal Survey of Children and Youth.
  6. c CIs were computed using bootstrap weights to account for the complex sampling design of the National Longitudinal Survey of Children
  7. and Youth.
  8. d p value for linear trend in the percentages of single and multiple behavioral risk factors over time obtained from the polynomial trend test.
  9. e Engaging in organized/unorganized physical activities fewer than 4 times per week.
  10. f Watching television or videos for more than 2 hours per day.
  11. g Ever smoking a cigarette, even a few puffs.
  12. h Ever having a standard drink of alcohol.
  13. i Being overweight/obese, as defined by cutoff points of Cole and colleagues [54].
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BMC Public Health

ISSN: 1471-2458

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