TABLE I. Distribution by age group of the positive cases of norovirus (NoV), astrovirus (AstV), adenovirus (AdV) and rotavirus (RVA) in children with acute gastroenteritis in Porto Velho, state of Rondônia, Brazil, February 2010-February 2012.
| Age months (n) | NoV | AstV | AdV | RVAa | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| n (%) | pb | OR | n (%) | p | OR | n (%) | p | OR | n (%) | p | OR | ||||
| 0-6 (134) | 9 (19.6) | 0.143 | 0.817 | 0 (0) | 0.119 | 0.306 | 4 (23.5) | 0.200 | 1.051 | 16 (15.5) | 0.014 | 0.577 | |||
| 7-12 (161) | 18 (39.1) | 0.017 | 1.807 | 2 (40) | 0.123 | 1.790 | 3 (17.6) | 0.116 | 0.564 | 25 (24.3) | 0.109 | 0.830 | |||
| 13-18 (103) | 12 (26.1) | 0.022 | 1.761 | 3 (60) | 0.008 | 7.290 | 3 (17.6) | 0.200 | 1.016 | 19 (18.4) | 0.155 | 1.088 | |||
| 19-24 (91) | 4 (8.7) | 0.057 | 0.501 | 0 (0) | 0.200 | 0.492 | 4 (23.5) | 0.063 | 1.722 | 17 (16.5) | 0.153 | 1.106 | |||
| > 24 (102) | 3 (6.5) | 0.009 | 0.314 | 0 (0) | 0.119 | 0.430 | 3 (17.6) | 0.200 | 1.028 | 26 (25.2) | 0.004 | 1.830 | |||
| Total (591) | 46 (100) | - | - | 5 (100) | - | - | 17 (100) | - | - | 103 (100) | - | - | |||
a
: Sandra et al. (2014);
b
: Fisher's exact test with Bonferroni correction (α = 0.01). When we analysed the grouped age group, it was observed a statistically significant relation in NoV of 0-18 month children [p = 0.002; odds ratio (OR) = 2.887, 95% confidence interval 1.266-6.580] by using Fisher's exact test with Bonferroni correction. In all RVA comparisons (0-12; 0-18; 0-24) statistically significant values were observed, without considerable OR values.