Table 1 Relationships between seropositivity for Q fever and characteristics of control subjects

Age (years)

55.2 (2.69)

54.9 (3.11)

0.45

Total cholesterol

2.23 (0.42)

2.15 (0.31)

0.20

HDL

0.48 (0.12)

0.48 (0.15)

0.69

Triglycerides*

1.37 (1.72)

1.35 (1.68)

0.81

Fibrinogen

3.37 (0.98)

3.53 (1.10)

0.16

CRP*

1.39 (2.73)

1.32 (2.01)

0.76

IL-6*

1.53 (1.97)

1.39 (2.73)

0.14

Number (%)

Number (%)

Smoking

never smoked

223 (25.8)

14 (18.2)

ex-smoker

360 (41.6)

38 (49.4)

current smoker < 20/day

164 (18.9)

11 (14.3)

current smoker ≥ 20/day

118 (13.6)

14 (18.2)

0.21