Table 1.
Association between age and infection of the norovirus GI genotype in Taiwan, 2015–2019.
| Age group | GI.3 (N = 261) | Other GI genotypes (N = 499) | Odds ratio∗ | p value | GI.3 (N = 261) | Other GI genotypes (N = 499) | ||
|---|---|---|---|---|---|---|---|---|
| n (%) | n (%) | Male, n (%) | Female, n (%) | Male, n (%) | Female, n (%) | |||
| 0–5 yrs | 19 (7.3) | 22 (4.4) | 2.25 | 0.0229 | 13 (68.4) | 6 (31.6) | 13 (59.1) | 9 (40.9) |
| 6–18 yrs | 99 (37.9) | 169 (33.9) | 1.53 | 0.0461 | 58 (58.6) | 41 (41.4) | 101 (59.8) | 68 (40.2) |
| 19–30 yrs | 48 (18.4) | 125 (25.1) | 1.00 | Reference | 34 (70.8) | 14 (29.2) | 83 (66.4) | 42 (33.6) |
| 31–45 yrs | 50 (19.2) | 87 (17.4) | 1.50 | 0.1007 | 26 (52.0) | 24 (48.0) | 46 (52.9) | 41 (47.1) |
| 46–65 yrs | 40 (15.3) | 77 (15.4) | 1.35 | 0.2424 | 14 (35.0) | 26 (65.0) | 32 (41.6) | 45 (58.4) |
| >65 yrs | 5 (1.9) | 19 (3.8) | 0.69 | 0.4763 | 2 (40.0) | 3 (60.0) | 4 (21.1) | 15 (78.9) |
∗Calculated by logistic regression. The total number of clusters and cases of NoV GI infection is 351 and 760, respectively.