Volume 22, Number 7—July 2016
Research
High Incidence of Chikungunya Virus and Frequency of Viremic Blood Donations during Epidemic, Puerto Rico, USA, 2014
Table 3
Characteristic | No. (%) nonreactive for IgG, n = 786* | No. (%) reactive for IgG, n = 242* | Total, n = 1,031* | Odds ratio (95% CI) |
---|---|---|---|---|
Sex | ||||
F | 235 (75.81) | 75 (24.19) | 310 | 1.00 |
M | 348 (74.95) | 117 (25.05) | 567 | 1.05 (0.75–1.47) |
Age, y | ||||
16–19 | 53 (56.99) | 40 (43.01) | 93 | 1.00 |
20–29 | 139 (81.29) | 32 (18.71) | 171 | 0.31 (0.17–0.55) |
30–39 | 119 (79.33) | 31 (20.67) | 150 | 0.35 (0.19–0.62) |
40–49 | 134 (81.71) | 30 (18.29) | 164 | 0.30 (0.16–0.54) |
50–59 | 90 (70.54)) | 38 (29.46) | 129 | 0.55 (0.31–0.97) |
60–78 | 49 (70.00) | 21 (30.00) | 69 | 0.57 (0.29–1.10) |
*Some specimens did not have complete demographic data.
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