Table 4 Subgroup analyses

Gender

 Female (continuous, n = 333)

1.74 (0.93, 3.26)

1.46 (0.74, 2.86)

0.87 (0.30, 2.53)

 Q1

Reference

 Q2

0.78 (0.23, 2.65)

1.26 (0.37, 4.35)

0.40 (0.12, 1.38)

 Q3

1.04 (0.36, 3.01)

0.85 (0.30, 2.43)

1.06 (0.36, 3.13)

 Q4

3.07 (1.04, 9.05) *

1.33 (0.46, 3.84)

0.73 (0.16, 3.35)

 Male (continuous, n = 328)

1.48 (0.69, 3.18)

1.17 (0.47, 2.92)

0.85 (0.32, 2.29)

 Q1

Reference

 Q2

1.06 (0.38, 2.97)

0.80 (0.21, 3.01)

1.17 (0.24, 5.59)

 Q3

1.30 (0.38, 4.48)

2.00 (0.65, 6.19)

1.23 (0.39, 3.92)

 Q4

2.26 (0.73, 7.00)

1.13 (0.24, 5.45)

0.63 (0.14, 2.76)

Smoking

 Yes (continuous, n = 329)

1.77 (0.95, 3.27)

1.41 (0.66, 2.98)

1.06 (0.57, 1.98)

 Q1

Reference

 Q2

0.98 (0.42, 2.26)

0.98 (0.34, 2.83)

1.44 (0.37, 5.62)

 Q3

1.71 (0.53, 5.45)

1.52 (0.68, 3.39)

2.16 (0.86, 5.43)

 Q4

2.70 (1.01, 7.26) *

1.71 (0.52, 5.64)

1.14 (0.46, 2.80)

 No (continuous, n = 332)

1.45 (0.57, 3.69)

1.16 (0.48, 2.79)

0.55 (0.16, 1.90)

 Q1

Reference

 Q2

1.09 (0.56, 2.10)

1.00 (0.36, 2.82)

0.35 (0.12, 1.02)

 Q3

0.84 (0.28, 2.52)

0.91 (0.34, 2.45)

0.47 (0.17, 1.34)

 Q4

2.86 (0.79, 10.34)

0.81 (0.19, 3.41)

0.38 (0.08, 1.73)