Table 3.
Results in Cases and Controls
| Test | Cases | Controls |
|---|---|---|
| (n = 158) | (n = 487) | |
| Antibody (ID IgG) | 113/145 (77.9) | 10/462 (2.2) |
| Antibody (ID IgM) | 38/145 (26.2) | 8/162 (1.7) |
| Antibody (ID IgG or ID IgM) | 123/146 (84.2)a,b,c | 16/462 (3.5) |
| Antibody (CF) | 86/126 (68.2)a | 0/52 (0) |
| Antibody (ID or CF) | 129/152 (84.9) | 16/464 (3.4) |
| Antigen (serum) | 81/158 (51.3)d | 2/487 (0.4) |
| Antigen (urine) | 51/139 (36.7)d | 3/175 (0.6) |
| Antigen (serum or urine) | 90/158 (57.0)b | 3/487 (0.6) |
| Antibody (ID) or antigen (serum or urine) | 147/158 (93.0)c | 19/487 (3.1) |
| Cytopathology or histopathology | 63/115 (54.8) | 1/237 (0.4) |
| Culture | 60/100 (60.0) | 0/158 (0) |
| Pathology or culture | 83/125 (66.4) | 1/269 (0.4) |
Data are expressed as present/total, no. (%).
Abbreviations: CF, complement fixation; ID, immunodiffusion; IgG, immunoglobulin G; IgM, immunoglobulin M.
Statistical analyses for comparison of results and determination of P values are as follows: aP = .0023. bP < .0001. cP = .0177. dP = .0139.