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Table 5 Reported rates of risk behaviours at each date and age- and gender-adjusted ORs for 2003 compared with 1990, by social class.

From: Changes in the socio-demographic patterning of late adolescent health risk behaviours during the 1990s: analysis of two West of Scotland cohort studies

 

NON-MANUAL

MANUAL

Age- and gender-adjusted odds ratio for 2003 compared with 1990

(p-value of SOCIAL CLASS by DATE interaction-age and gender adjusted)

 

1990

2003

 

1990

2003

 

NON-MANUAL

MANUAL

 

Risk behaviour

%

(95%CI)

%

(95%CI)

p-value

%

(95%CI)

%

(95%CI)

p-value

OR

(95% CI)

p-value

OR

(95% CI)

p-value

 

Current smoker

30.5

(26.0 - 35.4)

25.7

(21.7 - 30.2)

0.137

36.0

(31.9 - 40.4)

40.4

(36.3 - 44.7)

0.150

0.60

(0.41-0.89)

0.011

1.13

(0.83-1.56)

0.437

(0.058)

Heavier smoking *

16.6

(13.2 - 20.8)

11.8

(9.1 - 15.3)

0.055

26.7

(23.0 - 30.8)

18.2

(15.2 - 21.7)

0.001

0.52

(0.31-0.86)

0.011

0.63

(0.43-0.91)

0.015

(0.737)

Excessive drinking †

23.7

(19.7 - 28.3)

32.4

(28.0 - 37.0)

0.007

18.0

(14.9 - 21.6)

32.6

(28.6 - 36.7)

< 0.001

1.48

(1.00-2.19)

0.049

2.52

(1.74-3.64)

< 0.001

(0.047)

Binge drinking ‡

36.0

(31.2 - 41.0)

44.4

(39.7 - 49.3)

0.016

33.5

(29.5 - 37.8)

47.4

(43.1 - 51.7)

< 0.001

1.40

(0.98-2.01)

0.068

2.11

(1.53-2.92)

< 0.001

(0.108)

Use of any drugs

32.4

(27.8 - 37.4)

54.6

(49.8 - 59.3)

< 0.001

32.8

(28.8 - 37.1)

62.1

(57.8 - 66.1)

< 0.001

2.36

(1.65-3.39)

< 0.001

3.03

(2.19-4.20)

< 0.001

(0.102)

Used any drug in the past year

26.2

(21.9 - 30.9)

40.4

(35.8 - 45.2)

< 0.001

23.0

(19.5 - 26.9)

39.5

(35.4 - 43.7)

< 0.001

2.04

(1.40-2.98)

< 0.001

2.18

(1.55-3.08)

< 0.001

(0.373)

Used cannabis only in the past year ('cannabis-only') ^

15.5

(12.2 - 19.6)

28.6

(24.4 - 33.1)

< 0.001

13.6

(10.9 - 16.9)

21.1

(17.8 - 24.7)

0.002

2.48

(1.62-3.80)

< 0.001

1.82

(1.21-2.73)

0.004

(0.391)

Used any other drug in the past year ('other drugs') ~

10.6

(7.9 - 14.2)

11.8

(9.1 - 15.3)

0.594

9.1

(6.9 - 12.0)

18.4

(15.3 - 21.9)

< 0.001

0.98

(0.56-1.70)

0.933

1.97

(1.24-3.13)

0.004

(0.015)

Early sexual initiation #

11.8

(8.8 - 15.5)

21.7

(17.9 - 25.9)

< 0.001

18.5

(15.3 - 22.1)

33.8

(29.9 - 37.9)

< 0.001

2.05 ¶

(1.39-3.03)

< 0.001 ¶

2.30 ¶

(1.71-3.08)

< 0.001 ¶

(0.630) ¶

Three or more sexual

partners ever

19.1

(15.4-23.3)

42.2

(37.6-47.1)

< 0.001

27.5

(23.8-31.5)

56.5

(52.2-60.8)

< 0.001

2.17

(1.47-3.20)

< 0.001

2.48

(1.77-3.49)

< 0.001

(0.613)

Two or more sexual

partners last year

15.0

(11.8-18.9)

31.5

(27.2-36.1)

< 0.001

19.8

(16.6-23.5)

38.5

(34.4-42.7)

< 0.001

2.00

(1.31-3.05)

0.001

2.40

(1.66-3.46)

< 0.001

(0.940)

Ever (made) pregnant

3.0

(1.7 - 5.3)

5.6

(3.7 - 8.2)

0.080

8.2

(6.1 - 10.9)

11.1

(8.7 - 14.1)

0.113

1.77

(0.74-4.26)

0.201

0.79

(0.46-1.37)

0.409

(0.266)

  1. * Defined as smoking 70+ cigarettes a week
  2. † Defined as ≥22 units in the past week for men and ≥15 units in the past week for women
  3. ‡ Defined as ≥9 units on any day in the past week for men and ≥7 units on any day in the past week for women
  4. ^Defined as cannabis and no other drugs
  5. ~ Defined as any other drug(s) (with or without cannabis)
  6. # Defined as sexual intercourse at age < 16 years
  7. ¶ Data on early sexual initiation collected retrospectively so age adjustment not applicable; adjusted for gender only.
  8. OR = odds ratio for increase in behaviour rate between 1990 and 2003, CI = confidence interval
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BMC Public Health

ISSN: 1471-2458

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