Table 5 Effect of genetic score 2 (β2) on smoking behaviour.

From: Genetic scores of smoking behaviour in a Chinese population

 

Total

Male

Female

Smoker

Heavy smoker

SI ≤18

Smoker

Heavy smoker

SI ≤18

Smoker

Heavy smoker

SI ≤18

Group 1a

1

1

1

1

1

1

1

1

1

Group 2a

1.01 (0.85–1.21)

0.98 (0.76–1.27)

1.08 (0.89–1.32)

1.02 (0.79–1.31)

0.90 (0.67–1.21)

1.11 (0.86–1.43)

0.86 (0.61–1.20)

1.16 (0.61–2.65)

0.90 (0.61–1.35)

Group 3a

1.22 (1.03–1.45)

1.26 (0.98–1.61)

1.28 (1.05–1.55)

1.32 (1.03–1.71)

1.12 (0.84–1.49)

1.41 (1.10–1.82)

1.04 (0.75–1.44)

2.05 (0.51–4.29)

0.96 (0.65–1.43)

P for trend

0.024

0.066

0.013

0.029

0.427

0.007

0.831

0.046

0.838

Group 1b

1

1

1

1

1

1

1

1

1

Group 2b

1.00 (0.81–1.23)

0.98 (0.74–1.31)

1.07 (0.86–1.33)

1.09 (0.84–1.41)

0.96 (0.71–1.29)

1.14 (0.88–1.48)

0.84 (0.59–1.19)

1.16 (0.51–2.67)

0.90 (0.60–1.34)

Group 3b

1.24 (1.01–1.52)

1.24 (0.95–1.63)

1.28(1.03–1.58)

1.37 (1.06–1.77)

1.14 (0.85–1.52)

1.42 (1.10–1.84)

1.03 (0.74–1.44)

2.10 (1.00–4.42)

0.95 (0.64–1.43)

P for trend

0.038

0.108

0.025

0.018

0.382

0.006

0.863

0.042

0.808

Group 1c

1

1

1

1

1

1

1

1

1

Group 2c

1.00 (0.81–1.23)

0.99 (0.74–1.31)

1.07 (0.86–1.33)

1.09 (0.84–1.41)

0.96 (0.71–1.30)

1.14 (0.88–1.48)

0.84 (0.59–1.19)

1.16 (0.51–2.67)

0.90 (0.60–1.35)

Group 3c

1.24 (1.01–1.52)

1.24 (0.94–1.62)

1.28 (1.03–1.58)

1.37 (1.06–1.77)

1.13 (0.84–1.51)

1.42 (1.10–1.83)

1.03 (0.74–1.44)

2.11 (1.00–4.44)

0.96 (0.64–1.43)

P for trend

0.039

0.119

0.026

0.018

0.413

0.007

0.876

0.041

0.815

  1. aUnadjusted.
  2. bAdjusted for demographic characteristics (age, gender, education, occupation and ethnicity).
  3. cAdjusted for demographic characteristics (age, gender, education, occupation and ethnicity), BMI and sports activity time.
  4. SI = age of smoking initiation.
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