Table 4 Distribution of antibody titers among cases and non cases of PF, and measure of association.
From: Pontiac fever: an operational definition for epidemiological studies
Antibody titers | Number of subjects with Pontiac fever | Number of subjects without Pontiac fever | RR (and p*) |
|---|---|---|---|
1/16 | 5 | 94 | 1.39 (0.34) |
1/32 | 2 | 39 | 1.27 (0.49) |
1/64 | 3 | 77 | 0.94 (0.61) |
1/128 | 2 | 24 | 2.08 (0.27) |
1/256 | 2 | 14 | 3. 45 (0.12) |
1/512 | 0 | 6 | p = 0.78 |