Table 2 Characteristics of questionnaire respondents with complete questionnaire response, by testing wave and testing outcome for acute Q fever (n = 453)
Q fever positive | Q fever negative | |||
|---|---|---|---|---|
Wave 1 | ||||
Questionnaire recipients, n (% of tested) | 229 | (100) | 391 | (60.7) |
Respondents, n (response rate) | 143 | (62.4) | 198 | (50.6) |
Respondents, complete response, n (rate) | 140 | (97.9) | 194 | (98.0) |
Test ordered by | ||||
GP, n (%) | 102 | (72.9) | 177 | (91.2) |
Medical specialist, n (%) | 38 | (27.1) | 16 | (8.2) |
Unknown, n (%) | 0 | (0) | 1 | (0.5) |
Age in years (week 13, 2009) | ||||
Mean (range) | 49.7 | (5.9–85.5) | 46.7 | (0.8–92.4) |
0–19, n (%) | 7 | (5.0) | 28 | (14.4) |
20–39, n (%) | 23 | (16.4) | 40 | (20.6) |
40–59, n (%) | 72 | (51.4) | 64 | (33.0) |
≥60, n (%) | 38 | (27.1) | 62 | (32.0) |
Sex, n female (%) | 51 | (36.4) | 106 | (54.6) |
Residential farm distance, mean km (range) | 4.7 | (1.9–13.1) | 4.8 | (1.1–11.6) |
Active smoking, n (%) | 49 | (35.0) | 47 | (24.2) |
Wave 2 | ||||
Questionnaire recipients, n (% of tested) | 24 | (100) | 95 | (29.6) |
Respondents, n (response rate) | 19 | (79.2) | 94 | (98.9) |
Respondents, complete response, n (rate) | 18 | (94.7) | 91 | (96.8) |
Test ordered by | ||||
GP, n (%) | 13 | (72.2) | 73 | (80.2) |
Medical specialist, n (%) | ||||
Unknown, n (%) | 5 | (26.3) | 18 | (19.8) |
Age in years (week 13, 2009) | ||||
Mean (range) | 47.7 | (20.8–71.7) | 49.1 | (4.4–82.3) |
0–19, n (%) | 0 | 0 | 9 | (9.9) |
20–39, n (%) | 3 | (16.7)) | 11 | (12.1) |
40–59, n (%) | 12 | (66.7) | 43 | (47.3) |
≥60, n (%) | 3 | (16.7) | 28 | (30.8) |
Sex, n female (%) | 8 | (44.4) | 56 | (61.5) |
Residential farm distance, mean km (range) | 4.3 | (1.6–7.4) | 5.1 | (1.2–13.1) |
Active smoking, n (%) | 4 | (22.2) | 17 | (18.7) |