Research Article
Association of ABO Blood Group Phenotype and Allele Frequency with Chikungunya Fever
Table 1
Univariate analysis for CHIK seropositivity.
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Variables | Anti-CHIK IgG | P value |
OR (95% CI) | Positive (%) N = 314 | Negative (%) N = 192 |
| Age (years) | | | 0.13 | | <40 | 97 (30.9) | 76 (39.6) | | Reference | 40–60 | 148 (47.1) | 80 (41.7) | | 1.45 (0.97, 2.17) | >60 | 69 (22) | 36 (18.8) | | 1.5 (0.91, 2.48) | Gender | | | 0.03 | | Male | 110 (35) | 49 (25.5) | | Reference | Female | 204 (65) | 143 (74.5) | | 0.64 (0.43, 0.95) | ABO blood group | | | 0.76 | | O | 130 (41.4) | 78 (40.6) | <0.001 | Reference | A | 80 (25.5) | 46 (24) | 0.003 | 1.04 (0.66, 1.65) | B | 80 (25.5) | 48 (25) | 0.005 | 1 (0.63, 1.58) | AB | 24 (7.6) | 20 (10.4) | 0.55 | 0.72 (0.37, 1.39) |
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