Table 1 Characteristics of H7N9 human infections by wave of infection— Zhejiang Province, China, March 2013-February 2015
Characteristics | Total (n = 170) | Wave | ||||
|---|---|---|---|---|---|---|
First (n = 45) | Second (n = 94) | Third (n = 31) | Statistic | P value | ||
Rural, n (%) | 88(51.8) | 19(42.2) | 48(51.1) | 21(67.7) | 4.549 | 0.038 |
Onset after closure of live poultry markets, n (%) | 32(18.8) | 5(11.1) | 17(18.1) | 10(32.3) | 5.067 | 0.027 |
Deaths, n (%) | 56(32.9) | 10(22.2) | 39(41.5) | 13(41.9) | 3.767 | 0.052 |
Age (years) | 56.5 ± 16.1 | 59.7 ± 14.4 | 55.3 ± 17.5 | 55.7 ± 13.6 | 1.170 | 0.313 |
Male, n (%) | 114(67.1) | 28(62.2) | 64(68.1) | 22(71.0) | 0.736 | 0.699 |
Occupation, n (%) | 16.001 | 0.068 | ||||
Farmer | 81(47.6) | 17(37.8) | 44(46.8) | 20(64.5) | ||
Homemaker | 11(6.5) | 4(8.9) | 3(3.2) | 4(12.9) | ||
Retiree | 37(21.8) | 14(31.1) | 18(19.1) | 5(16.1) | ||
Self-employed | 22(12.9) | 6(13.3) | 14(14.9) | 2(6.5) | ||
Worker | 16(9.4) | 4(8.9) | 12(12.8) | 0(0.0) | ||
Child | 3(1.8) | 0(0.0) | 3(3.2) | 0(0.0) | ||