Skip to main content

Table 3 Trends in sunscreen use and sun exposure among GenoMEL participants

From: Birth cohort-specific trends of sun-related behaviors among individuals from an international consortium of melanoma-prone families

Birth decade

n

(%)

Sunscreen use

Daily sun exposure (hours)

Overall

SPF-Weighted

Overall

During weekdays

During weekends

During holidays

Overalla

 1910–1929

147

(6.4)

2.40

2.29

2.22

2.04

2.67

1.43

 1930–1939

351

(15.2)

2.59

2.47

2.59

2.35

3.17

2.89

 1940–1949

493

(21.4)

2.57

2.39

2.52

2.19

3.32

2.73

 1950–1959

501

(21.7)

2.59

2.37

2.36

1.98

3.27

2.79

 1960–1969

482

(20.9)

2.69

2.47

2.35

1.97

3.25

2.89

 1970–1979

292

(12.6)

2.87

2.55

2.45

2.13

3.19

2.82

 1980–1989

141

(6.1)

2.92

2.76

2.44

2.13

3.17

2.99

 Total

2407

       

 Betab

0.08

0.11

−0.01

−0.04

0.04

0.05

 Ptrenda

0.004

0.0003

0.64

0.26

0.26

0.38

10 years old or youngerc

 1910–1929

147

(6.4)

*

*

3.40

2.38

4.30

4.80

 1930–1939

351

(15.2)

*

*

3.48

2.42

4.61

4.83

 1940–1949

493

(21.4)

1.19

1.13

3.56

2.47

4.64

4.97

 1950–1959

501

(21.7)

1.38

1.23

3.44

2.34

4.54

4.79

 1960–1969

482

(20.9)

1.89

1.61

3.42

2.39

4.46

4.66

 1970–1979

292

(12.6)

2.47

2.18

3.43

2.41

4.36

4.64

 1980–1989

141

(6.1)

3.18

2.99

3.19

2.37

3.95

4.24

 Total

2407

       

 Betab

0.41

0.34

−0.03

−0.01

−0.07

−0.08

 Ptrendc

< 0.0001

< 0.0001

0.04

0.65

0.003

0.0002

11 to 20 years oldc

 1910–1929

147

(6.4)

*

*

2.79

2.22

3.68

3.29

 1930–1939

351

(15.2)

1.32

1.21

2.86

2.20

3.93

3.48

 1940–1949

493

(21.4)

1.37

1.23

2.88

2.14

3.92

3.83

 1950–1959

501

(21.7)

1.64

1.40

2.85

2.06

3.83

3.94

 1960–1969

482

(20.9)

2.10

1.80

2.93

2.13

3.87

4.07

 1970–1979

292

(12.6)

2.83

2.42

3.01

2.26

3.79

4.05

 1980–1989

141

(6.1)

3.16

2.99

2.73

2.09

3.41

3.53

 Total

2407

       

 Betab

0.33

0.27

0.01

−0.01

−0.04

0.09

 Ptrendc

< 0.0001

< 0.0001

0.37

0.76

0.04

0.0001

After 20 years olda

 1910–1929

147

(6.4)

2.53

2.43

2.22

2.05

2.65

1.41

 1930–1939

351

(15.2)

2.79

2.66

2.62

2.38

3.17

2.94

 1940–1949

493

(21.4)

2.98

2.78

2.53

2.21

3.30

2.78

 1950–1959

501

(21.7)

3.10

2.87

2.37

1.98

3.28

2.83

 1960–1969

482

(20.9)

3.20

3.02

2.35

1.97

3.23

2.87

 1970–1979

292

(12.6)

3.30

3.05

2.49

2.17

3.17

2.74

 1980–1989

141

(6.1)

2.93

2.76

2.51

2.15

3.18

2.97

 Total

2407

       

 Betab

0.13

0.10

−0.01

−0.03

0.03

0.03

 Ptrenda

0.0002

0.002

0.83

0.31

0.33

0.64

Non-casesc

 1910–1929

77

(6.1)

1.71

1.60

2.59

2.50

2.84

1.39

 1930–1939

164

(13.0)

2.15

2.03

2.68

2.44

3.25

2.90

 1940–1949

207

(16.5)

2.34

2.14

2.71

2.40

3.50

2.98

 1950–1959

268

(21.3)

2.38

2.13

2.50

2.14

3.36

2.98

 1960–1969

242

(19.3)

2.76

2.47

2.49

2.11

3.38

3.08

 1970–1979

189

(15.0)

2.97

2.68

2.34

1.98

3.17

3.03

 1980–1989

110

(8.8)

3.26

3.11

2.48

2.15

3.24

3.21

 Total

1257

       

 Betab

0.23

0.24

−0.06

− 0.09

0.01

0.08

 Ptrendc

< 0.0001

< 0.0001

0.02

0.001

0.73

0.10

Melanoma Casesa

 1910–1929

70

(6.1)

2.70

2.57

2.04

1.81

2.59

1.82

 1930–1939

187

(16.3)

2.69

2.55

2.63

2.41

3.15

3.10

 1940–1949

286

(24.9)

2.64

2.46

2.39

2.08

3.18

2.63

 1950–1959

233

(20.3)

2.83

2.65

2.20

1.80

3.16

2.57

 1960–1969

240

(20.9)

2.75

2.59

2.13

1.71

3.09

2.59

 1970–1979

103

(9.0)

3.13

2.74

2.52

2.23

3.22

2.44

 1980–1989

31

(2.7)

2.92

2.71

1.91

1.47

2.94

2.45

 Total

1150

       

 Betab

0.07

0.10

−0.04

−0.07

0.04

−0.07

 Ptrenda

0.08

0.02

0.33

0.11

0.25

0.43

Adjusted Mean Differencea

0.008

0.06

−0.11

−0.12

− 0.07

−0.46

PAMDa

0.91

0.36

0.11

0.15

0.39

0.002

Pheterogeneity of trenda

0.69

0.69

0.59

0.85

0.31

0.51

Pre-Diagnosisc

 1910–1929

70

(6.1)

2.10

1.94

2.31

1.84

3.07

3.58

 1930–1939

187

(16.3)

2.10

1.92

2.83

2.42

3.52

3.78

 1940–1949

285

(24.9)

2.07

1.85

2.70

2.12

3.63

3.98

 1950–1959

232

(20.3)

2.35

2.14

2.64

1.98

3.58

3.88

 1960–1969

239

(20.9)

2.50

2.33

2.72

1.98

3.65

3.96

 1970–1979

101

(8.8)

3.15

2.71

3.02

2.26

3.73

4.13

 1980–1989

31

(2.7)

3.11

2.86

2.78

2.05

3.57

3.75

 Total

1145

       

 Betab

0.18

0.16

0.05

−0.03

0.06

0.05

 Ptrendc

< 0.0001

< 0.0001

0.02

0.23

0.01

0.07

Post-Diagnosisc

 1910–1929

70

(6.1)

2.79

2.73

1.92

1.86

2.11

2.48

 1930–1939

186

(16.4)

3.16

3.07

2.62

2.53

2.86

3.43

 1940–1949

283

(25.0)

3.71

3.64

2.42

2.20

2.93

2.74

 1950–1959

231

(20.4)

4.08

4.02

2.10

1.68

3.05

3.08

 1960–1969

234

(20.6)

3.91

3.87

2.08

1.70

2.98

2.78

 1970–1979

101

(8.9)

4.04

3.91

2.63

2.31

3.33

3.54

 1980–1989

29

(2.6)

3.47

3.40

2.28

1.77

3.23

3.09

 Total

1134

       

 Betab

0.24

0.24

−0.02

−0.10

0.13

0.04

 Ptrendc

< 0.0001

< 0.0001

0.43

0.003

< 0.0001

0.62

Adjusted Mean Differenced

1.36

1.5

−0.41

− 0.08

− 0.63

−0.88

PAMDd

< 0.0001

< 0.0001

< 0.0001

0.04

< 0.0001

< 0.0001

Pheterogeneity of trendd

0.04

0.001

0.10

< 0.0001

0.0004

0.94

  1. * Sunscreen was not widely available until the 1950s; analyses were limited to 1950s and afterwards
  2. a Model adjusted for sex, phenotype factor variables, center geography, years unaffected, and clustered by family
  3. b Betas represent the average change per unit increase in birth decade, after adjusting for covariates
  4. c Model adjusted for sex, phenotype factor variables, center geography, and clustered by family
  5. d Model adjusted for repeated individual data clustered by family
Back to article page

BMC Public Health

ISSN: 1471-2458

Contact us