Table 1.
Epidemiologic and clinical characteristics of mild, severe and fatal cases confirmed as avian H7N9 virus infection from March 31 of 2013 to December 31 of 2014
| Characteristic | Mild (N = 14) | Severe (N = 50) | Fatal (N = 35) | p-value |
|---|---|---|---|---|
| Population distribution | ||||
| Average age (years) | 27.6 (5 months-82 years) | 52 (1.5-85) | 62 (27-91) | <0.001 |
| Gender (% male) | 42.9 % (6/14) | 58.0 % (29/50) | 74.3 % (26/35) | 0.094 |
| Illness progress | ||||
| Median days from exposure to onset | 4 (1-7) | 2 (0-6) | 5 (1-13) | 0.037 |
| Median days from onset to consultation | 1 (0-5) | 3 (0-13) | 3 (0-7) | 0.059 |
| Median days from onset to confirmation | 3 (0-8) | 8 (1-26) | 11 (0-41) | 0.001 |
| Median days from onset to antiviral therapy | 2 (0-5) | 5 (0-10) | 7 (1-12) | 0.002 |
| Median days from onset to outcome | 12 (0-32) | 40 (3-126) | 19 (3-85) | <0.001 |
The p -value pertains to the comparison of the confirmed cases from mild, severe and fatal cases
We used an F-test to analyze the average age and median days for a three-group comparison
Chi-square (χ2) tests were applied to compare the distribution of the different variables of qualitative measurements, such as the gender distribution