Table 1. Comparison of clinical characteristics between norovirus GI and GII diarrheal episodes.
| Variable | NoV GI | NoV GII | p-value | |
|---|---|---|---|---|
| Overall | Number of episodesa | 49 | 150 | — |
| Median (IQR) duration (in days) | 3 (2–4) | 3 (2–5) | 0.542b | |
| Median (IQR) Vesikari score | 5 (5–8) | 5 (5–7) | 0.749b | |
| Number (%) of episodes with associated vomiting | 12 (24.5) | 33 (22.8) | 0.804c | |
| Number (%) of episodes with associated fever | 14 (28.6) | 33 (22.8) | 0.443c | |
| Before introduction of supplementary feeding | Number of episodesa | 8 | 11 | — |
| Median (IQR) duration(in days) | 4 (3–5.5) | 3 (2–5) | 0.399b | |
| Median (IQR) Vesikari score | 5 (4.5–6) | 5 (5–7) | 0.465b | |
| Number (%) of episodes with associated vomiting | 0 (0%) | 3 (27.3) | 0.228d | |
| Number (%) of episodes with associated fever | 1 (12.5) | 2 (18.2) | 1.000d | |
| After introduction of supplementary feeding | Number of episodesa | 41 | 134 | — |
| Median (IQR) duration(in days) | 3 (2–4) | 3 (2–5) | 0.848b | |
| Median (IQR) Vesikari score | 6 (5–8) | 5 (5–7) | 0.475b | |
| Number (%) of episodes with associated vomiting | 12 (29.3) | 30 (22.4) | 0.367c | |
| Number (%) of episodes with associated fever | 13 (31.7) | 31 (23.1) | 0.268c | |
| During infancy | Number of episodesa | 42 | 86 | — |
| Median (IQR) duration(in days) | 3 (2–4) | 3 (2–5) | 0.630b | |
| Median (IQR) Vesikari score | 5 (5–8) | 6 (5–9) | 0.291b | |
| Number (%) of episodes with associated vomiting | 9 (21.4) | 23 (26.7) | 0.514c | |
| Number (%) of episodes with associated fever | 11 (26.2) | 22 (25.6) | 0.941c | |
| Post infancy (2nd and 3rd year of life) | Number of episodes | 7 | 59 | — |
| Median (IQR) duration (in days) | 3 (2–5) | 2 (2–3) | 0.229b | |
| Median (IQR) Vesikari score | 7 (6–8) | 5 (4–7) | 0.023b | |
| Number (%) of episodes with associated vomiting | 3 (42.9) | 10 (16.9) | 0.131d | |
| Number (%) of episodes with associated fever | 3 (42.9) | 11 (18.6) | 0.159d |
a = Includes both primary and secondary infections
b = Mann-Whitney U test
c = Chi-square (χ2) test
d = Fisher’s exact test