Table 3 Adjusted odds ratios (ORs) of any sunburns for covariates and environmental variables of interest

Female (ref = male)

1.31

(1.03–1.68)

0.03

1.32

(1.03–1.69)

0.03

1.31

(1.03–1.68)

0.03

1.32

(1.03–1.69)

0.03

1.31

(1.02–1.68)

0.03

Race/ethnicity (ref = White, non-Hispanic)

 Hispanic

0.37

(0.25–0.55)

0.28

0.36

(0.24–0.54)

0.38

0.36

(0.24–0.54)

0.42

0.36

(0.24–0.54)

0.41

0.35

(0.24–0.53)

0.45

 Black or African

American, non-Hispanic

0.09

(0.06–0.15)

 < 0.0001

0.10

(0.06–0.16)

 < 0.0001

0.10

(0.06–0.16)

 < 0.0001

0.10

(0.06–0.16)

 < 0.0001

0.10

(0.06–0.16)

 < 0.0001

 Other, non-Hispanic

0.28

(0.18–0.43)

0.50

0.27

(0.17–0.42)

0.35

0.27

(0.17–0.42)

0.38

0.27

(0.17–0.41)

0.36

0.27

(0.17–0.42)

0.38

PA level in past 7 days (ref = none)

 Sometimes/often

1.36

(0.89–2.08)

0.22

1.32

(0.86–2.02)

0.23

1.32

(0.86–2.01)

0.24

1.30

(0.85–2.00)

0.26

1.30

(0.85–1.99)

0.26

 Quite/very often

1.31

(0.84–2.06)

0.44

1.25

(0.79–1.97)

0.59

1.25

(0.80–1.97)

0.58

1.24

(0.79–1.95)

0.59

1.24

(0.79–1.96)

0.58

Self-rated weight (ref = very/a little under)

 Just right

0.76

(0.52–1.12)

0.005

0.74

(0.50–1.10)

0.004

0.75

(0.51–1.10)

0.004

0.73

(0.50–1.09)

0.004

0.74

(0.50–1.09)

0.004

 Little/very over

1.22

(0.80–1.87)

0.03

1.18

(0.77–1.82)

0.04

1.19

(0.78–1.83)

0.04

1.17

(0.76–1.81)

0.04

1.18

(0.77–1.82)

0.04

 Any tanning bed use (ref = no)

5.46

(2.03–14.64)

0.0008

5.23

(1.94–14.13)

0.001

5.36

(1.99–14.45)

0.0009

5.41

(2.00–14.71)

0.0009

5.45

(2.04–15.06)

0.0008

Sunscreen use (ref = never/rarely/sometimes)

 Often/always

1.00

(0.78–1.30)

0.99

1.00

(0.78–1.30)

0.98

1.01

(0.78–1.30)

0.95

1.00

(0.77–1.29)

0.99

1.00

(0.78–1.30)

0.98

 Intentional sun exposure (ref = never/rarely/sometimes)

 Often/always

1.78

(1.26–2.52)

0.001

1.81

(1.28–2.56)

0.0008

1.82

(1.29–2.57)

0.0007

1.79

(1.26–2.53)

0.001

1.79

(1.27–2.54)

0.001

 School neighborhood poverty (tertiles; linear trend)

0.97

(0.84–1.13)

0.71

0.97

(0.84–1.12)

0.67

0.96

(0.83–1.12)

0.61

0.97

(0.83–1.12)

0.65

0.96

(0.83–1.11)

0.60

 Longitude

–

–

0.99

(0.98–1.00)

0.04

0.99

(0.98–1.00)

0.02

0.99

(0.98–1.00)

0.18

0.99

(0.98–1.00)

0.15

 Latitude

–

–

1.03

(1.00–1.05)

0.06

–

–

1.02

(1.00–1.05)

0.11

–

–

 Academic year; Average daily EDR (tertiles; linear trend)

–

–

–

–

0.89

(0.76–1.05)

0.17

–

–

0.92

(0.78–1.08)

0.29

School tree cover (tertiles; linear trend)

–

–

–

–

–

–

0.91

(0.78–1.07)

0.25

0.90

(0.76–1.07)

0.21