Table 1

Frequencies of categorical predictors at age 15 and outcomes at age 15 and 18/19 variables.

Categorical variables

N

Frequency (%)


Sex (miss = 0)

Female

1080

49.18

Male

1116

50.82

Parental Smoking (miss = 6)

No

547

24.98

No parent figure

32

1.46

Yes

1,611

73.56

Social Class (miss = 161)

Manual

1,069

52.53

Non-manual

966

47.47

Family structure (miss = 0)

2-parent

1571

71.54

1-parent,

351

15.98

reconstituted

224

10.20

other

50

2.28

Religion (miss = 277)

Protestant

813

42.37

Roman Catholic

653

34.03

Muslim/Islam

48

2.50

Other (Baptist, Jewish, etc)

112

5.84

None/Atheist/Agnostic

293

15.27

Risk taking (miss = 11)

Very true

205

9.38

True

1,188

54.37

Untrue or very untrue

792

36.25


Substance-use outcomes (moderate)


Smoking*, age 15 (miss = 2)

559

25.48

Smoking*, age 18/19 (miss = 980)

350

28.78

Weekly alcohol, age 15 (miss = 8)

547

25.00

Weekly alcohol, age 18/19 (miss = 980)

570

46.88

Illegal drugs, ever, age 15 (miss = 5)

882

40.26

Illegal drugs, ever, age 18/19 (miss = 980)

679

55.84


Substance-use outcomes (severe)


Regularly smoke**, age 15 (miss = 2)

481

21.92

Regularly smoke**, age 18/19 (miss = 980)

291

23.93

Drink most days, age 15 (miss = 8)

69

3.15

Drink most days, age 18/19 (miss = 980)

70

5.76

Illegal drugs, weekly use, age 15 (miss = 5)

265

12.09

Illegal drugs, weekly use, age 18/19 (miss = 980)

154

12.66


*Occasional or regular smoking; ** regular smoking

miss = missing values

Note: 94 cases had missing values on the eight values factors, 145 on the area deprivation score and 1 case on the low parental care and control scales.

Young and West BMC Public Health 2010 10:165   doi:10.1186/1471-2458-10-165

Open Data