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Table 1 Sex, age, sun exposure and pigmentation of the children and mothers in the study population

From: Influence of maternal and own genotype at tanning dependence-related SNPs on sun exposure in childhood

Variable (N)

%

n

Female (11,524)

48.5

5586

Had been badly sun burnt when aged 8 (7297)

1.7

124

Had been badly sun burnt between ages 0 and 8 (6600)

5.0

327

Number of days the child was in the sun for 4 or more hours at 8 years (6679)

 None

4.2

283

 Less than 10

19.5

1303

 10–19

23.3

1554

 10–29

25.5

1702

 30–39

15.1

1008

 40 or more

12.4

829

Child normally wore a hat while out in the sun at 8 years (7206)

 Never

5.3

385

 Sometimes

36.2

2606

 Usually

39.2

2828

 Always

19.3

1388

Child normally wore something to keep skin covered in the sun at 8 years (7193)

 Never

2.3

162

 Sometimes

36.8

2648

 Usually

44.5

3198

 Always

16.5

1185

Child normally used sun cream whilst out in the sun at 8 years (7217)

 Never

0.9

64

 Sometimes

11.2

810

 Usually

32.6

2354

 Always

55.3

3989

Factor of sun cream the child normally used at 8 years (7039)

 4–7

0.9

64

 8–14

6.2

433

 15–20

31.7

2232

 21–25

16.4

1154

 25+

44.8

3156

Star rating of sun cream child usually used at 8 years (1152)

 Low

29.3

337

 High

70.8

815

Child usually avoided the midday sun at 8 years (7188)

 Never

8.1

580

 Sometimes

36.1

2596

 Usually

39.8

2861

 Always

16.0

1151

Frequency of sun cream application at 8 years (7059)

 Once only

10.9

767

 Every 3 to 4 h

43.1

3045

 Every 2 h

34.9

2464

 Every hour

10.1

711

 Every half hour

1.0

72

Child’s skin pigmentation (7744)

 Always burns, never tans

0.9

72

 Burns easily, rarely tans

9.6

743

 Doesn’t change

4.0

312

 Tans easily, rarely burns

40.0

3098

 Always tans, never burns

17.3

1337

 Can’t say [their] skin is always protected

28.2

2182

Mother’s eye color (3922)

 Blue

39.6

1553

 Green

22.2

870

 Brown

25.8

1011

 Grey

5.8

227

 Other

6.7

261

Means and SDs

Mean

SD

Age in months at questionnaire at 8 years (7297)

105

3

  1. Sun exposure variables were reported by the children’s mothers