Table 2 Partially adjusted^† salivary cotinine concentration (geometric means) for each ethnic group.

All

0.71

(0.62, 0.82)

0.50

(0.44, 0.56)*

0.29

(0.26, 0.33)*

0.27

(0.23, 0.31)*

0.32

(0.27, 0.37)*

0.50

(0.41, 0.60)*

Household smoking

No smokers

0.30

(0.25, 0.36)

0.32

(0.28, 0.36)

0.26

(0.23, 0.29)

0.22

(0.19, 0.26)*

0.25

(0.21, 0.29)

0.32

(0.26, 0.41)

Maternal smoker only

1.48

(1.16, 1.89)

1.08

(0.86, 1.35)*

0.65

(0.39, 1.07)*

0.53

(0.23, 1.23)*

0.94

(0.22, 3.94)

0.72

(0.32, 1.64)

Paternal smoking only

0.84

(0.63, 1.11)

0.44

(0.34, 0.56)*

0.49

(0.38, 0.64)*

0.46

(0.35, 0.61)*

0.49

(0.38, 0.65)*

0.88

(0.67, 1.16)

Both parents smoke

1.97

(1.44, 2.69)

1.43

(0.99, 2.05)

0.46

(0.22, 0.94)*

1.23

(0.51, 2.97)

0.41

(0.19, 0.87)*

0.33

(0.04, 2.89)

Other household member smokes

0.61

(0.36, 1.05)

0.43

(0.32, 0.60)

0.44

(0.27, 0.71)

0.33

(0.18, 0.61)

0.35

(0.22, 0.55)

0.35

(0.19, 0.63)

Socioeconomic circumstances

Most advantaged tertile°

0.57

(0.46, 0.70)

0.45

(0.37, 0.54)

0.31

(0.25, 0.38)*

0.28

(0.22, 0.36)*

0.34

(0.26, 0.45)*

0.57

(0.36, 0.90)

Least advantaged tertile°

1.09

(0.84, 1.43)

0.51

(0.42, 0.61)*

0.29

(0.25, 0.35)*

0.27

(0.20, 0.37)*

0.27

(0.21, 0.36)*

0.47

(0.34, 0.64)*

Dual parent household

0.65

(0.56, 0.76)

0.46

(0.40, 0.53)*

0.28

(0.25, 0.32)*

0.27

(0.24, 0.32)*

0.31

(0.26, 0.36)*

0.50

(0.41, 0.61)*

Lone parent household

0.96

(0.74, 1.26)

0.53

(0.45, 0.62)*

0.32

(0.27, 0.37)*

0.26

(0.15, 0.46)*

0.38

(0.25, 0.58)*

0.45

(0.27, 0.75)*

Not crowded household

0.53

(0.44, 0.63)

0.47

(0.40, 0.55)

0.29

(0.24, 0.36)*

0.27

(0.22, 0.34)*

0.30

(0.22, 0.42)*

0.41

(0.26, 0.64)

Crowded household

0.89

(0.73, 1.07)

0.51

(0.44, 0.59)*

0.29

(0.25, 0.33)*

0.28

(0.24, 0.34)*

0.31

(0.26, 0.37)*

0.50

(0.41, 0.62)*