Table 1 Characteristics of the total population of subjects tested in the study period, by testing wave and testing outcome for acute Q fever (n = 1218)
Q fever positive | Q fever negative | Total | Positive rate | |||
|---|---|---|---|---|---|---|
Wave 1 | ||||||
Subjects tested, n | 229 | 644 | 873 | 26.2% | ||
Test ordered by | ||||||
GP, n (%) | 155 | (67.7) | 468 | (72.2) | ||
Medical specialist, n (%) | 72 | (31.4) | 170 | (26.4) | ||
Unknown, n (%) | 2 | (0.9) | 6 | (0.9) | ||
Age in years (week 13, 2009) | ||||||
Mean (range) | 49.0 | (0.9–85.5) | 45.1 | (0.5–92.4) | ||
0–19, n (%) | 11 | (4.8) | 87 | (13.5) | ||
20–39, n (%) | 46 | (24.9) | 154 | (37.4) | ||
40–59, n (%) | 113 | (49.3) | 235 | (36.5) | ||
≥60, n (%) | 59 | (25.8) | 168 | 26.1) | ||
Sex, n female (%) | 83 | (36.2) | 346 | (53.7) | ||
Residential farm distance, mean km | 5.1 | 6.1 | ||||
Wave 2 | ||||||
Subjects tested, n | 24 | 321 | 345 | 7.0% | ||
Test ordered by | ||||||
GP, n (%) | 19 | (79.2) | 237 | (79.2) | ||
Medical specialist, n (%) | 61 | (19.0) | ||||
Unknown, n (%) | 5 | (20.8) | 23 | (7.2) | ||
Age in years (week 13, 2009) ) | ||||||
Mean (range) | 46.7 | (20.8–71.7) | 46.8 | (0–88.5) | ||
0–19, n (%) | 0 | 0 | 42 | (13.1) | ||
20–39, n (%) | 4 | (16.7) | 60 | (18.7) | ||
40–59, n (%) | 17 | (70.8) | 125 | (38.9) | ||
≥60, n (%) | 3 | (12.5) | 94 | (29.3) | ||
Sex, n female (%) | 10 | (41.7) | 184 | (57.3) | ||
Residential farm distance, mean km | 5.1 | 5.7 | ||||