Table 1 Demographic and clinical characteristics of patients
Characteristic | H7N9 | Non-H7N9 | P-value |
|---|---|---|---|
(numberā=ā121) | (numberā=ā2,603) | Ā | |
Demographic | |||
Age | |||
14 to 59Ā years | 50 (41.3) | 1,293 (49.7) | 0.077 |
ā„60Ā years | 71 (58.7) | 1,310 (50.3) | Ā |
Data missing, % | 0 (0) | 0 (0) | Ā |
Sex | |||
Female | 35 (28.9) | 1,045 (40.1) | 0.013 |
Male | 86 (71.1) | 1,558 (59.9) | Ā |
Data missing, % | 0 (0) | 0 (0) | Ā |
History of poultry exposure | |||
Yes | 85 (70.2) | 53 (2) | <0.001 |
No | 36 (29.8) | 1,583 (60.8) | Ā |
Data missing, % | 0 (0) | 967 (37.1) | Ā |
Influenza vaccination history | |||
Yes | 0 (0) | 32 (1.2) | 0.999 |
No | 36 (29.8) | 1,603 (61.6) | Ā |
Data missing, % | 85 (70.2) | 968 (37.2) | Ā |
Smoking history | |||
Yes | 26 (21.5) | 365 (14) | 0.004 |
No | 78 (64.5) | 2,238 (86) | Ā |
Data missing, % | 17 (14) | 0 (0) | Ā |
History of underlying medical conditions | |||
Yes | 42 (34.7) | 846 (32.5) | 0.110 |
No | 62 (51.2) | 1,751 (67.3) | Ā |
Data missing, % | 17 (14) | 6 (0.2) | Ā |
Presence of symptoms on presentation | |||
Fever | 95 (78.5) | 1,462 (56.2) | <0.001 |
Data missing, % | 17 (14) | 0 (0) | Ā |
Cough | 95 (78.5) | 2,013 (77.3) | <0.001 |
Data missing, % | 17 (14) | 3 (0.1) | Ā |
Hemoptysis | 25 (20.7) | 96 (3.7) | <0.001 |
Data missing, % | 17 (14) | 11 (0.4) | Ā |
Shortness of breath | 62 (51.2) | 391 (15) | <0.001 |
Data missing, % | 17 (14) | 9 (0.3) | Ā |
Sore throat | 7 (5.8) | 418 (16.1) | 0.088 |
Data missing, % | 40 (33.1) | 10 (0.4) | Ā |
Rhinorrhea | 2 (1.7) | 131 (5) | 0.435 |
Data missing, % | 40 (33.1) | 9 (0.3) | Ā |
Vomiting | 4 (3.3) | 67 (2.6) | 0.351 |
Data missing, % | 17 (14) | 9 (0.3) | Ā |
Diarrhea | 10 (8.3) | 34 (1.3) | <0.001 |
Data missing, % | 17 (14) | 9 (0.3) | Ā |
Investigations | |||
Chest radiography | |||
Normal | 95 (78.5) | 1,908 (73.3) | <0.001 |
Pneumonia/consolidation | 7 (5.8) | 690 (26.5) | Ā |
Data missing, % | 19 (15.7) | 5 (0.2) | Ā |
Hemoglobin level | |||
Low | 20 (16.5) | 903 (34.7) | 0.029 |
Normal | 77 (63.6) | 1,463 (56.2) | Ā |
High | 6 (5) | 77 (3) | Ā |
Data missing, % | 18 (14.9) | 160 (6.1) | Ā |
Leukocyte count | |||
Low | 48 (39.7) | 201 (7.7) | 0.232 |
Normal | 51 (42.1) | 1,567 (60.2) | Ā |
High | 5 (4.1) | 728 (28) | Ā |
Data missing, % | 17 (14) | 107 (4.1) | Ā |
C-reactive protein | |||
Normal | 8 (6.6) | 192 (7.4) | 0.095 |
High | 83 (68.6) | 1,025 (39.4) | Ā |
Data missing, % | 30 (24.8) | 1,386 (53.2) | Ā |