Table 1. Baseline characteristics of infants in the study cohort and crude analysis of risk factors according to RV detection.
| Variable | Total (n=220) n (%) | RV - (n=166) n (%) | RV + (n=54) n (%) | OR** | 95% CI | p-value*** | |||
|---|---|---|---|---|---|---|---|---|---|
| Sex | Boy | 130 (59) | 93 (56) | 37 (69) | 1 | ||||
| Girl | 90 (41) | 73 (44) | 17 (31) | 0.58 | 0.30 | - | 1.13 | 0.107 | |
| Age (months) | ≤ 3 | 82 (37) | 67 (40) | 15 (28) | 1 | ||||
| 4-≤6 | 56 (25) | 41 (25) | 15 (28) | 1.63 | 0.72 | - | 3.69 | ||
| 7-≤12 | 82 (37) | 58 (35) | 24 (44) | 1.13 | 0.53 | - | 2.42 | 0.243 | |
| Season of birth | Dry | 102 (46) | 79 (48) | 23 (43) | 1 | ||||
| Rainy | 118 (54) | 87 (52) | 31 (57) | 1.22 | 0.66 | - | 2.28 | 0.523 | |
| Coinfections | |||||||||
| Other viruses* | No | 151 (69) | 110 (66) | 41 (76) | 1 | ||||
| Yes | 69 (31) | 56 (34) | 13 (24) | 1.76 | 0.31 | - | 1.26 | 0.186 | |
| IBI | No | 173 (79) | 130 (78) | 43 (80) | 1 | ||||
| Yes | 14 (6) | 10 (6) | 4 (7) | 1.21 | 0.36 | - | 4.07 | ||
| No data | 33 (15) | 26 (16) | 7 (13) | 0.81 | 0.33 | - | 2.01 | 0.849 | |
| Parasitemia | No | 197 (90) | 148 (89) | 49 (91) | 1 | ||||
| Yes | 20 (9) | 16 (10) | 4 (7) | 0.75 | 0.24 | - | 2.37 | ||
| No data | 3 (1) | 2 (1) | 1 (2) | 1.51 | 0.13 | - | 17.13 | 0.837 | |
| HIV infected | No | 162 (74) | 129 (78) | 33 (61) | 1 | ||||
| Yes | 37 (17) | 22 (13) | 15 (28) | 2.66 | 1.23 | - | 5.78 | ||
| No data | 21 (9) | 15 (9) | 6 (11) | 1.56 | 0.56 | - | 4.36 | 0.038 | |
| Otherconditions | |||||||||
| Malnutrition | No | 121 (55) | 93 (56) | 28 (52) | 1 | ||||
| Moderate | 78 (35) | 58 (35) | 20 (37) | 1.15 | 0.59 | - | 2.22 | ||
| Severe | 21 (10) | 15 (9) | 6 (11) | 1.16 | 0.40 | - | 3.40 | 0.834 | |
| Wheezing | No | 162 (74) | 126 (76) | 36 (67) | 1 | ||||
| Yes | 58 (26) | 40 (24) | 18 (33) | 1.58 | 0.80 | - | 3.09 | 0.183 | |
* Viruses included (number of viruses detected): RSV (n=24), influenza (n=7), adenovirus (n=15), human metapneumovirus (n=14), parainfluenza virus 1, 2, 3 and 4AB (n=6) and enterovirus (n=7). ** OR for age and malnutrition were calculated by comparing each category with the previous one rather than with the basal category. *** Wald test