Volume 28, Number 7—July 2022
Research
Targeted Screening for Chronic Q Fever, the Netherlands
Table 3
Characteristic |
All participants, n = 1,642 |
Previous infection, IgG II titer >1:64, n = 289 |
Suspected of having chronic Q fever, IgG I titer >1:512, n = 9 |
Mean age, y | 63 | 64 | 63 |
Age >60 y, % of total | 66 | 65 | 78 |
Male sex, % of total |
49 |
59 |
67 |
Risk factor, no.† | |||
Heart valve | 460 | 103 | 0 |
Vascular | 202 | 50 | 4 |
Other cardiovascular | 105 | 20 | 1 |
Immunocompromised by illness | 419 | 57 | 1 |
Immunocompromised by medication | 445 | 59 | 3 |
Missing | 135 | 18 | 0 |
*Corresponding International Classification of Primary Care codes for risk factor: heart valve, K83; vascular, K99.01; other cardiovascular, K73 and K71; immunocompromised by illness; B73, B74, B90, and D94; immunocompromised by medication, L04A. †Some participants had multiple risk factors.
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