Skip to main content

Advertisement

Table 2 Associations between reported rates of risk behaviours and age-ORs for one month increase in age when interviewed at each date (and significance of interactions between age and date, gender and 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

  1990 2003 (p-value of AGE by DATE
Interaction)
(p-value of AGE by GENDER interaction) (p-value of AGE by SOCIAL CLASS interaction)
  OR
(95% CI)
p-value OR
(95% CI)
p-value    
Current smoker 1.03
(0.99-1.07)
0.089 1.02
(0.99-1.04)
0.061 (0.582) (0.286) (0.954)
Heavier smoking * 1.02
(0.98-1.06)
0.378 1.01
(0.98-1.04)
0.508 (0.710) (0.044) (0.220)
Excessive drinking 0.99
(0.95-1.03)
0.668 0.99
(0.97-1.01)
0.491 (0.942) (0.437) (0.806)
Binge drinking 0.99
(0.95-1.02)
0.479 0.99
(0.97-1.01)
0.315 (0.896) (0.132) (0.976)
Use of any drugs 1.03
(0.99-1.07)
0.084 1.01
(0.99-1.03)
0.359 (0.286) (0.759) (0.378)
Used any drug in the past year 1.03
(0.99-1.07)
0.115 0.99
(0.97-1.01)
0.279 (0.058) (0.902) (0.503)
Used cannabis only in the past year (cannabis only) ^ 1.03
(0.98-1.08)
0.257 0.97
(0.95-0.99)
0.024 (0.044) (0.261) (0.716)
Used any other drug in the past year ('other drugs') ~ 1.03
(0.97-1.09)
0.337 1.02
(0.99-1.04)
0.225 (0.717) (0.644) (0.208)
Early sexual initiation # N/A N/A N/A N/A N/A
Three or more sexual partners ever 1.08
(1.04-1.13)
> 0.001 1.05
(1.03-1.07)
> 0.001 (0.188) (0 < .001) (0.892)
Two or more sexual partners last year 1.06
(1.02-1.11)
0.007 1.02
(0.99-1.04)
0.153 (0.064) (0.564) (0.273)
Ever (made) pregnant 1.08
(1.00-1.16)
0.046 1.06
(1.03-1.09)
0.000 (0.689) (0.800) (0.794)
  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. # Defiined as sexual intercourse at age < 16 years
  7. Data on early sexual initiation collected retrospectively so association with age when interviewed not applicable
  8. OR = odds ratio, CI = confidence interval, NA = not applicable