Table 3.
Comparison of the characteristics of patients with confirmed H7N9 infection in China between different plateau periods
| Characteristics | Confirmed H7N9 casesa | P | ||
|
|
The first plateau (Mar 31 to Apr 28, 2013) |
The second plateau (Jan 10 to Feb 10, 2014) |
|
|
| Total number of cases | 118 | 176 | NEb | |
| Age (years) |
|
|
|
|
|
|
Number of cases | 118 | 175 | NEb |
|
|
Median age (IQRc) | 61.5 (48-74) | 57.0 (41-67) | .01 |
|
|
% ≥ 65 years | 51 (43.2) | 49 (28.0) | .01 |
|
|
%<64 years | 67 (56.8) | 126 (72.0) | .01 |
| Sex, n/N (%) |
|
|
|
|
|
|
Male | 83/118 (70.3) | 115/175 (65.7) | .41 |
|
|
Female | 35/118 (29.7) | 60/175 (34.3) |
|
| Area of residence, n/N (%) |
|
|
|
|
|
|
Urban | 82/104 (78.8) | 72/130 (55.4) | <.001 |
|
|
Rural | 22/104 (21.2) | 58/130 (44.6) |
|
| Poultry workers, n/N (%) | 5/88 (5.7) | 2/95 (2.1) | .27 | |
| Clinical outcomes, n/N (%) |
|
|
|
|
|
|
Hospitalization | 107/118 (90.7) | 93/93 (100.0) | NEb |
|
|
ICU admission | 30/56 (53.6) | 2/4 (50.0) | NEb |
|
|
ARDSd | 12/14 (85.7) | 1/5 (20.0) | NEb |
|
|
Death | 27/118 (22.9) | 23/176 (13.1) | .03 |
aUnless stated otherwise, data in the table provided are the number of patients with a certain characteristics, the total number of patients having data on that characteristic, and the corresponding percentage.
bNE: not estimable
cIQR: interquartile range
dARDS: respiratory distress syndrome